400090504 has 32 divisors (see below), whose sum is σ = 819295200. Its totient is φ = 181653120.

The previous prime is 400090499. The next prime is 400090517. The reversal of 400090504 is 405090004.

It is a super-2 number, since 2×400090504² = 320144822781948032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97339 + ... + 101365.

It is an arithmetic number, because the mean of its divisors is an integer number (25602975).

Almost surely, 2^400090504 is an apocalyptic number.

400090504 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400090504 is an abundant number, since it is smaller than the sum of its proper divisors (419204696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400090504 is a wasteful number, since it uses less digits than its factorization.

400090504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173 (or 5169 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 400090504 is about 20002.2624720305. The cubic root of 400090504 is about 736.8618654686.

Multiplying 400090504 by its sum of digits (22), we get a palindrome (8801991088).

The spelling of 400090504 in words is "four hundred million, ninety thousand, five hundred four".