396400688 has 10 divisors (see below), whose sum is σ = 768026364. Its totient is φ = 198200336.

The previous prime is 396400687. The next prime is 396400709. The reversal of 396400688 is 886004693.

It is not an unprimeable number, because it can be changed into a prime (396400687) by changing a digit.

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 as a sum of consecutive naturals, namely, 12387506 + ... + 12387537.

Almost surely, 2^396400688 is an apocalyptic number.

It is an amenable number.

396400688 is a deficient number, since it is larger than the sum of its proper divisors (371625676).

396400688 is a wasteful number, since it uses less digits than its factorization.

396400688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24775051 (or 24775045 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 396400688 is about 19909.8138615106. The cubic root of 396400688 is about 734.5896412048.

The spelling of 396400688 in words is "three hundred ninety-six million, four hundred thousand, six hundred eighty-eight".