It's about 0.0000005 times as heavy as The Golden Gate Bridge.
In other words, 404 kilograms is 0.000000502 times the weight of The Golden Gate Bridge, and the weight of The Golden Gate Bridge is 1,990,000 times that amount.(San Francisco, California and Marin County, California) (Post 1986 weight reduction; total weight of bridge, anchorage, and approaches)
Following the completion of the 1986 project to eliminate excess material, the total weight of the Golden Gate Bridge — including its anchorages and approaches — is 805,000,000 kilograms. The two main cables in the spanning the bridge are spun out of a total of 129,000 km (80,200 mi) of wire.
It's about 2,000,000 times as heavy as a Raindrop.
In other words, the weight of a Raindrop is 0.0000005 times 404 kilograms.(a.k.a. drop, a.k.a. droplet) (average)
It's about 15,000,000 times as heavy as a Grain of Rice.
In other words, the weight of a Grain of Rice is 0.000000071 times 404 kilograms.(long grain; 14% moisture content)
It's about 0.00000007 times as heavy as The Great Pyramid of Giza.
In other words, 404 kilograms is 0.000000068 times the weight of The Great Pyramid of Giza, and the weight of The Great Pyramid of Giza is 15,000,000 times that amount.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt)
The Great Pyramid of Giza has an estimated mass of 5,900,000,000 kilograms. The 2,300,000 stones used in the construction of the pyramid weighed an average 2,300 kilograms and were quarried from distances of up to 805 km (500 mi) away.
It's about 90,000,000 times as heavy as a Grain of Sand.
In other words, 404 kilograms is 92,000,000 times the weight of a Grain of Sand, and the weight of a Grain of Sand is 0.000000011 times that amount.(medium grain)
It's about 100,000,000 times as heavy as a Sesame Seed.
In other words, 404 kilograms is 111,000,000 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.00000000901 times that amount.(Sesamum indicum)
It's about 650,000,000 times as heavy as a Grain of Sugar.
In other words, 404 kilograms is 646,000,000 times the weight of a Grain of Sugar, and the weight of a Grain of Sugar is 0.00000000155 times that amount.(a.k.a. white sugar, a.k.a. white refined sugar, a.k.a. table sugar, a.k.a. sucrose, a.k.a. saccharose)