397892 has 12 divisors (see below), whose sum is σ = 759696. Its totient is φ = 180840.

The previous prime is 397867. The next prime is 397897. The reversal of 397892 is 298793.

397892 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (397897) by changing a digit.

397892 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, 4478 + ... + 4565.

It is an arithmetic number, because the mean of its divisors is an integer number (63308).

2³⁹⁷⁸⁹² is an apocalyptic number.

It is an amenable number.

397892 is a deficient number, since it is larger than the sum of its proper divisors (361804).

397892 is a wasteful number, since it uses less digits than its factorization.

397892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9058 (or 9056 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 397892 is about 630.7868102616. The cubic root of 397892 is about 73.5509696287.

Subtracting from 397892 its reverse (298793), we obtain a palindrome (99099).

The spelling of 397892 in words is "three hundred ninety-seven thousand, eight hundred ninety-two".