400804432 has 40 divisors (see below), whose sum is σ = 890139456. Its totient is φ = 171261696.

The previous prime is 400804423. The next prime is 400804433. The reversal of 400804432 is 234408004.

It is a junction number, because it is equal to n+sod(n) for n = 400804397 and 400804406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400804433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33708 + ... + 44020.

Almost surely, 2^400804432 is an apocalyptic number.

It is an amenable number.

400804432 is an abundant number, since it is smaller than the sum of its proper divisors (489335024).

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

400804432 is a wasteful number, since it uses less digits than its factorization.

400804432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10675 (or 10669 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 400804432 is about 20020.1006990474. The cubic root of 400804432 is about 737.2998944607.

The spelling of 400804432 in words is "four hundred million, eight hundred four thousand, four hundred thirty-two".