397172 has 12 divisors (see below), whose sum is σ = 717696. Its totient is φ = 192120.

The previous prime is 397153. The next prime is 397181. The reversal of 397172 is 271793.

It is a happy number.

397172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

397172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (59808).

2³⁹⁷¹⁷² is an apocalyptic number.

It is an amenable number.

397172 is a deficient number, since it is larger than the sum of its proper divisors (320524).

397172 is a wasteful number, since it uses less digits than its factorization.

397172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3236 counting only the distinct ones).

The product of its digits is 2646, while the sum is 29.

The square root of 397172 is about 630.2158360435. The cubic root of 397172 is about 73.5065784600.

The spelling of 397172 in words is "three hundred ninety-seven thousand, one hundred seventy-two".