397976 has 8 divisors (see below), whose sum is σ = 746220. Its totient is φ = 198984.

The previous prime is 397973. The next prime is 397981. The reversal of 397976 is 679793.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397973) by changing a digit.

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 as a sum of consecutive naturals, namely, 24866 + ... + 24881.

2³⁹⁷⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

397976 is a deficient number, since it is larger than the sum of its proper divisors (348244).

397976 is a wasteful number, since it uses less digits than its factorization.

397976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49753 (or 49749 counting only the distinct ones).

The product of its digits is 71442, while the sum is 41.

The square root of 397976 is about 630.8533902580. The cubic root of 397976 is about 73.5561451091.

It can be divided in two parts, 3 and 97976, that added together give a palindrome (97979).

The spelling of 397976 in words is "three hundred ninety-seven thousand, nine hundred seventy-six".