397948 has 6 divisors (see below), whose sum is σ = 696416. Its totient is φ = 198972.

The previous prime is 397939. The next prime is 397951. The reversal of 397948 is 849793.

It is a super-2 number, since 2×397948² = 316725221408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49740 + ... + 49747.

2³⁹⁷⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

397948 is a deficient number, since it is larger than the sum of its proper divisors (298468).

397948 is a wasteful number, since it uses less digits than its factorization.

397948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99491 (or 99489 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 397948 is about 630.8311977066. The cubic root of 397948 is about 73.5544200299.

The spelling of 397948 in words is "three hundred ninety-seven thousand, nine hundred forty-eight".