400404080528 has 20 divisors (see below), whose sum is σ = 775821653388. Its totient is φ = 200192040960.

The previous prime is 400404080507. The next prime is 400404080539. The reversal of 400404080528 is 825080404004.

It can be written as a sum of positive squares in 2 ways, for example, as 99257762704 + 301146317824 = 315052^2 + 548768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289133 + ... + 940428.

Almost surely, 2^400404080528 is an apocalyptic number.

It is an amenable number.

400404080528 is a deficient number, since it is larger than the sum of its proper divisors (375417572860).

400404080528 is a wasteful number, since it uses less digits than its factorization.

400404080528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249922 (or 1249916 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The spelling of 400404080528 in words is "four hundred billion, four hundred four million, eighty thousand, five hundred twenty-eight".