398396804 has 24 divisors (see below), whose sum is σ = 754154688. Its totient is φ = 183060000.

The previous prime is 398396783. The next prime is 398396821. The reversal of 398396804 is 408693893.

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, 5072 + ... + 28679.

It is an arithmetic number, because the mean of its divisors is an integer number (31423112).

Almost surely, 2^398396804 is an apocalyptic number.

It is an amenable number.

398396804 is a deficient number, since it is larger than the sum of its proper divisors (355757884).

398396804 is a wasteful number, since it uses less digits than its factorization.

398396804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33995 (or 33993 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 398396804 is about 19959.8798593579. The cubic root of 398396804 is about 735.8206109154.

The spelling of 398396804 in words is "three hundred ninety-eight million, three hundred ninety-six thousand, eight hundred four".