397772 has 12 divisors (see below), whose sum is σ = 700560. Its totient is φ = 197616.

The previous prime is 397763. The next prime is 397799. The reversal of 397772 is 277793.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam 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, 929 + ... + 1287.

It is an arithmetic number, because the mean of its divisors is an integer number (58380).

2³⁹⁷⁷⁷² is an apocalyptic number.

It is an amenable number.

397772 is a deficient number, since it is larger than the sum of its proper divisors (302788).

397772 is a wasteful number, since it uses less digits than its factorization.

397772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its digits is 18522, while the sum is 35.

The square root of 397772 is about 630.6916837885. The cubic root of 397772 is about 73.5435748216.

The spelling of 397772 in words is "three hundred ninety-seven thousand, seven hundred seventy-two".