396951664 has 20 divisors (see below), whose sum is σ = 802533456. Its totient is φ = 189846272.

The previous prime is 396951647. The next prime is 396951673. The reversal of 396951664 is 466159693.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538969 + ... + 539704.

Almost surely, 2^396951664 is an apocalyptic number.

It is an amenable number.

396951664 is an abundant number, since it is smaller than the sum of its proper divisors (405581792).

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

396951664 is a wasteful number, since it uses less digits than its factorization.

396951664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078704 (or 1078698 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 49.

The square root of 396951664 is about 19923.6458510986. The cubic root of 396951664 is about 734.9298305604.

The spelling of 396951664 in words is "three hundred ninety-six million, nine hundred fifty-one thousand, six hundred sixty-four".