397996 has 24 divisors (see below), whose sum is σ = 745920. Its totient is φ = 185472.

The previous prime is 397981. The next prime is 398011. The reversal of 397996 is 699793.

It is an interprime number because it is at equal distance from previous prime (397981) and next prime (398011).

It is an unprimeable number.

397996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5416 + ... + 5488.

It is an arithmetic number, because the mean of its divisors is an integer number (31080).

2³⁹⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

397996 is a deficient number, since it is larger than the sum of its proper divisors (347924).

397996 is a wasteful number, since it uses less digits than its factorization.

397996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 151 counting only the distinct ones).

The product of its digits is 91854, while the sum is 43.

The square root of 397996 is about 630.8692416024. The cubic root of 397996 is about 73.5573772590.

The spelling of 397996 in words is "three hundred ninety-seven thousand, nine hundred ninety-six".