397732 has 12 divisors (see below), whose sum is σ = 737100. Its totient is φ = 187136.

The previous prime is 397729. The next prime is 397751. The reversal of 397732 is 237793.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 173056 = 474^2 + 416^2 .

It is a junction number, because it is equal to n+sod(n) for n = 397694 and 397703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2857 + ... + 2992.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2³⁹⁷⁷³² is an apocalyptic number.

It is an amenable number.

397732 is a deficient number, since it is larger than the sum of its proper divisors (339368).

397732 is a wasteful number, since it uses less digits than its factorization.

397732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870 (or 5868 counting only the distinct ones).

The product of its digits is 7938, while the sum is 31.

The square root of 397732 is about 630.6599717756. The cubic root of 397732 is about 73.5411095554.

The spelling of 397732 in words is "three hundred ninety-seven thousand, seven hundred thirty-two".