396904236 has 24 divisors (see below), whose sum is σ = 980587440. Its totient is φ = 124518912.

The previous prime is 396904229. The next prime is 396904241. The reversal of 396904236 is 632409693.

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, 972601 + ... + 973008.

It is an arithmetic number, because the mean of its divisors is an integer number (40857810).

Almost surely, 2^396904236 is an apocalyptic number.

It is an amenable number.

396904236 is an abundant number, since it is smaller than the sum of its proper divisors (583683204).

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

396904236 is a wasteful number, since it uses less digits than its factorization.

396904236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945633 (or 1945631 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 396904236 is about 19922.4555715404. The cubic root of 396904236 is about 734.9005594564.

The spelling of 396904236 in words is "three hundred ninety-six million, nine hundred four thousand, two hundred thirty-six".