396967920 has 40 divisors (see below), whose sum is σ = 1230601296. Its totient is φ = 105858048.

The previous prime is 396967919. The next prime is 396967937. The reversal of 396967920 is 29769693.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 826777 + ... + 827256.

Almost surely, 2^396967920 is an apocalyptic number.

396967920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396967920 is an abundant number, since it is smaller than the sum of its proper divisors (833633376).

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

396967920 is a wasteful number, since it uses less digits than its factorization.

396967920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654049 (or 1654043 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 51.

The square root of 396967920 is about 19924.0538043843. The cubic root of 396967920 is about 734.9398627275.

The spelling of 396967920 in words is "three hundred ninety-six million, nine hundred sixty-seven thousand, nine hundred twenty".