It's about four-and-a-half times the number of Population of Vatican City.
In other words, 3,900 is 4.63 times the count of Population of Vatican City, and the count of Population of Vatican City is 0.216 times that amount.(a.k.a. Vatican City State, a.k.a. Stato della Città del Vaticano, a.k.a. Status Civitatis Vaticanae) (Rome, Italy) (2014 estimates; permanent residents only)
Vatican City, the seat of the Roman Catholic Church, is the smallest internationally recognized state in the world, with a population of just 842 people (according to a 2004 estimate). Each year, approximately 18 million tourists visit The City.
It's about five times the number of Kernels on an Ear of Corn.
In other words, the count of Kernels on an Ear of Corn is 0.2 times 3,900.(Corn, a.k.a. Maize; Kernel a.k.a. Seed) (average) (for Dent Corn, a.k.a. field corn)
An average ear of dent corn, the kind grown to feed to animals and to make other foods, has an average of 800 kernels. Each acre of corn yields about 15,900 ears of corn.
It's about five times the number of Inductees in the Rock and Roll Hall of Fame.
In other words, 3,900 is 5.21 times the count of Inductees in the Rock and Roll Hall of Fame, and the count of Inductees in the Rock and Roll Hall of Fame is 0.192 times that amount.(November, 2015 figures) (including individuals and groups)
As of November, 2015, there were 749 individuals in the Rock and Roll Hall of Fame. Artists and bands must have had at least 25 years of fame before being considered for induction in the Hall.
It's about six times the number of Members of Parliament (The U.K.).
In other words, the count of Members of Parliament (The U.K.) is 0.17 times 3,900.(a.k.a. MPs) (2016 figures) (formally "Members of the House of Commons of the Parliament of the United Kingdom of Great Britain and Northern Ireland")
There are 650 Members of Parliament in the U.K. The Commons Chamber in the Palace of Westminster only has seating for 427 members, so those arriving late to House debates must stay standing.
It's about seven-and-a-half times the number of Stores in the Mall of America.
In other words, the count of Stores in the Mall of America is 0.13 times 3,900.(a.k.a. MOA, a.k.a. MoA, a.k.a. Megamall) (Bloomington, Minnesota) (2015 figures) (approximate)
Minnesota's Mall of America is home to 520 stores and attractions, including a wedding chapel, aquarium, and amusement park. Each year, an estimated 42 million people visit The Mall.
It's about eight-and-a-half times the number of Olympic Gold Medals Won by the Soviet Union.
In other words, 3,900 is 8.25 times the count of Olympic Gold Medals Won by the Soviet Union, and the count of Olympic Gold Medals Won by the Soviet Union is 0.121 times that amount.(a.k.a. Union of Soviet Socialist Republics, a.k.a. USSR, a.k.a. Сою́з Сове́тских Социалисти́ческих Респу́блик, a.k.a. CCCP) (a.k.a. Olympic Games, a.k.a. Jeux olympiques) (Summer and Winter Games grand totals; excluding Russian Federation Medals) (1952 thru 1988 figures)
During its 19 appearances in the Summer and Winter Olympic Games, the Soviet Union was awarded 473 gold medals. The Union holds the as-yet-unbroken record for gold medals in gymnastics, with 72.
It's about one-tenth the number of McDonald's Locations in the World.
In other words, 3,900 is 0.11 times the count of McDonald's Locations in the World, and the count of McDonald's Locations in the World is 9.1 times that amount.(2015 figures) (approximate)
Operating in 119 countries, there are currently 36,000 McDonald's locations worldwide. From 1955 thru 1993, many McDonald's locations advertised the number in billions of hamburgers sold on their external signs, but abandoned theses updates after the figure passed 100 billion.