400594938 has 16 divisors (see below), whose sum is σ = 811332480. Its totient is φ = 131841216.

The previous prime is 400594937. The next prime is 400594973. The reversal of 400594938 is 839495004.

It is a self number, because there is not a number n which added to its sum of digits gives 400594938.

It is not an unprimeable number, because it can be changed into a prime (400594937) 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, 422095 + ... + 423042.

It is an arithmetic number, because the mean of its divisors is an integer number (50708280).

Almost surely, 2^400594938 is an apocalyptic number.

400594938 is an abundant number, since it is smaller than the sum of its proper divisors (410737542).

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

400594938 is a wasteful number, since it uses less digits than its factorization.

400594938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845221.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 400594938 is about 20014.8679236212. The cubic root of 400594938 is about 737.1714138263.

The spelling of 400594938 in words is "four hundred million, five hundred ninety-four thousand, nine hundred thirty-eight".