856338904 has 32 divisors (see below), whose sum is σ = 1617084000. Its totient is φ = 425129472.

The previous prime is 856338871. The next prime is 856338929. The reversal of 856338904 is 409833658.

It is a congruent number.

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, 931357 + ... + 932275.

It is an arithmetic number, because the mean of its divisors is an integer number (50533875).

Almost surely, 2^856338904 is an apocalyptic number.

It is an amenable number.

856338904 is a deficient number, since it is larger than the sum of its proper divisors (760745096).

856338904 is a wasteful number, since it uses less digits than its factorization.

856338904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 856338904 is about 29263.2688536329. The cubic root of 856338904 is about 949.6171694783.

The spelling of 856338904 in words is "eight hundred fifty-six million, three hundred thirty-eight thousand, nine hundred four".