397906120 has 16 divisors (see below), whose sum is σ = 895288860. Its totient is φ = 159162432.

The previous prime is 397906087. The next prime is 397906123. The reversal of 397906120 is 21609793.

397906120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 396726724 + 1179396 = 19918^2 + 1086^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 397906120.

It is not an unprimeable number, because it can be changed into a prime (397906123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4973787 + ... + 4973866.

Almost surely, 2^397906120 is an apocalyptic number.

It is an amenable number.

397906120 is an abundant number, since it is smaller than the sum of its proper divisors (497382740).

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

397906120 is a wasteful number, since it uses less digits than its factorization.

397906120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9947664 (or 9947660 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 397906120 is about 19947.5843148989. The cubic root of 397906120 is about 735.5183965324.

The spelling of 397906120 in words is "three hundred ninety-seven million, nine hundred six thousand, one hundred twenty".