It's about 150 times the number of Countries in the European Union.
In other words, the count of Countries in the European Union is 0.0071 times 3,900.(a.k.a. EU) (2016 figures)
It's about one-one-hundred-fiftieth the number of Words in War and Peace.
In other words, 3,900 is 0.00664071 times the count of Words in War and Peace, and the count of Words in War and Peace is 150.586 times that amount.(1869) (1968 Ann Dunnigan translation, New American Library)
It's about 250 times the number of Living Kings and Queens.
In other words, the count of Living Kings and Queens is 0.0038 times 3,900.(2015 figures) (distinct Monarchs)
As of 2015, the world has fifteen Kings and Queens reigning over 45 countries. Of all these, Queen Elizabeth the II is the only reigning Queen; she has monarchical authority over the sixteen of the Commonwealth nations.
It's about 450 times the number of Symohonies Composed by Beethoven.
In other words, 3,900 is 433.333333333 times the count of Symohonies Composed by Beethoven, and the count of Symohonies Composed by Beethoven is 0.00230769230769 times that amount.(a.k.a. Ludwig van Beethoven)
Over the course of his life, Beethoven composed nine symphonies over the course of a twenty-four year period. After his death in early 1827, an estimated 20,000 Austrian citizens attended his public funeral.
It's about 800 times the number of Living U.S. Presidents.
In other words, the count of Living U.S. Presidents is 0.001 times 3,900.(a.k.a. Presidents of the United States; a.k.a. Presidents of the United States of America; a.k.a. POTUS), (2016 figures) (including current)
As of this writing, there are five living United States Presidents — President Carter, President Clinton, President Obama, and the two Presidents Bush. At no point in U.S. history have their been more than six (6) living presidents, this circumstance having occurred three times.
It's about one-one-thousandth the number of ATMs in the World.
In other words, the count of ATMs in the World is 1,000 times 3,900.(2015 figures) (approximate)
There are approximately 3 million ATMs in the world, including sites in Antarctica, cruise ships, US Navy ships, and Tibet. ATM's typically hold between $20,000 and $100,000, depending on the size of the crowds where they're located.
It's about 2,000 times the number of Escalators in the State of Wyoming.
In other words, the count of Escalators in the State of Wyoming is 0.0005 times 3,900.(2013 figures)