397831324 has 24 divisors (see below), whose sum is σ = 767024496. Its totient is φ = 179040000.

The previous prime is 397831283. The next prime is 397831333. The reversal of 397831324 is 423138793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40317 + ... + 49204.

It is an arithmetic number, because the mean of its divisors is an integer number (31959354).

Almost surely, 2^397831324 is an apocalyptic number.

It is an amenable number.

397831324 is a deficient number, since it is larger than the sum of its proper divisors (369193172).

397831324 is a wasteful number, since it uses less digits than its factorization.

397831324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89637 (or 89635 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 397831324 is about 19945.7094133049. The cubic root of 397831324 is about 735.4723075358.

The spelling of 397831324 in words is "three hundred ninety-seven million, eight hundred thirty-one thousand, three hundred twenty-four".