396904 has 8 divisors (see below), whose sum is σ = 744210. Its totient is φ = 198448.

The previous prime is 396887. The next prime is 396919. The reversal of 396904 is 409693.

It can be written as a sum of positive squares in only one way, i.e., 396900 + 4 = 630^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24799 + ... + 24814.

2³⁹⁶⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

396904 is a deficient number, since it is larger than the sum of its proper divisors (347306).

396904 is a wasteful number, since it uses less digits than its factorization.

396904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49619 (or 49615 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 396904 is about 630.0031745952. The cubic root of 396904 is about 73.4900413799.

The spelling of 396904 in words is "three hundred ninety-six thousand, nine hundred four".