397925 has 12 divisors (see below), whose sum is σ = 538656. Its totient is φ = 289200.

The previous prime is 397921. The next prime is 397939. The reversal of 397925 is 529793.

It is not a de Polignac number, because 397925 - 2² = 397921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397925.

It is not an unprimeable number, because it can be changed into a prime (397921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449 + ... + 998.

It is an arithmetic number, because the mean of its divisors is an integer number (44888).

2³⁹⁷⁹²⁵ is an apocalyptic number.

It is an amenable number.

397925 is a deficient number, since it is larger than the sum of its proper divisors (140731).

397925 is a wasteful number, since it uses less digits than its factorization.

397925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1463 counting only the distinct ones).

The product of its digits is 17010, while the sum is 35.

The square root of 397925 is about 630.8129675268. The cubic root of 397925 is about 73.5530029400.

It can be divided in two parts, 3979 and 25, that added together give a palindrome (4004).

The spelling of 397925 in words is "three hundred ninety-seven thousand, nine hundred twenty-five".