401637404 has 12 divisors (see below), whose sum is σ = 803274864. Its totient is φ = 172130304.

The previous prime is 401637389. The next prime is 401637421. The reversal of 401637404 is 404736104.

401637404 is an admirable number.

It is a super-2 number, since 2×401637404² = 322625208583718432, which contains 22 as substring.

It is a congruent number.

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, 7172069 + ... + 7172124.

It is an arithmetic number, because the mean of its divisors is an integer number (66939572).

Almost surely, 2^401637404 is an apocalyptic number.

It is an amenable number.

401637404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401637404 is a wasteful number, since it uses less digits than its factorization.

401637404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344204 (or 14344202 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 401637404 is about 20040.8932934637. The cubic root of 401637404 is about 737.8103056543.

The spelling of 401637404 in words is "four hundred one million, six hundred thirty-seven thousand, four hundred four".