397756772 has 12 divisors (see below), whose sum is σ = 795513600. Its totient is φ = 170467176.

The previous prime is 397756757. The next prime is 397756787. The reversal of 397756772 is 277657793.

It is an interprime number because it is at equal distance from previous prime (397756757) and next prime (397756787).

397756772 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7102772 + ... + 7102827.

It is an arithmetic number, because the mean of its divisors is an integer number (66292800).

Almost surely, 2^397756772 is an apocalyptic number.

It is an amenable number.

397756772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

397756772 is a wasteful number, since it uses less digits than its factorization.

397756772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14205610 (or 14205608 counting only the distinct ones).

The product of its digits is 3889620, while the sum is 53.

The square root of 397756772 is about 19943.8404526310. The cubic root of 397756772 is about 735.4263631421.

The spelling of 397756772 in words is "three hundred ninety-seven million, seven hundred fifty-six thousand, seven hundred seventy-two".