397597716 has 36 divisors (see below), whose sum is σ = 1014805792. Its totient is φ = 131244624.

The previous prime is 397597699. The next prime is 397597721. The reversal of 397597716 is 617795793.

397597716 is a `hidden beast` number, since 39 + 7 + 597 + 7 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49906 + ... + 57321.

Almost surely, 2^397597716 is an apocalyptic number.

397597716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

397597716 is an abundant number, since it is smaller than the sum of its proper divisors (617208076).

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

397597716 is a wasteful number, since it uses less digits than its factorization.

397597716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107340 (or 107335 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 54.

The square root of 397597716 is about 19939.8524568263. The cubic root of 397597716 is about 735.3283220114.

The spelling of 397597716 in words is "three hundred ninety-seven million, five hundred ninety-seven thousand, seven hundred sixteen".