400290976 has 24 divisors (see below), whose sum is σ = 834431220. Its totient is φ = 188371968.

The previous prime is 400290953. The next prime is 400290983. The reversal of 400290976 is 679092004.

It can be written as a sum of positive squares in 2 ways, for example, as 379314576 + 20976400 = 19476^2 + 4580^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367371 + ... + 368458.

Almost surely, 2^400290976 is an apocalyptic number.

It is an amenable number.

400290976 is an abundant number, since it is smaller than the sum of its proper divisors (434140244).

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

400290976 is a wasteful number, since it uses less digits than its factorization.

400290976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735856 (or 735848 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 400290976 is about 20007.2730775586. The cubic root of 400290976 is about 736.9849172155.

The spelling of 400290976 in words is "four hundred million, two hundred ninety thousand, nine hundred seventy-six".