397081 has 4 divisors (see below), whose sum is σ = 418000. Its totient is φ = 376164.

The previous prime is 397073. The next prime is 397093. The reversal of 397081 is 180793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397081 - 2³ = 397073 is a prime.

It is a super-2 number, since 2×397081² = 315346641122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10431 + ... + 10468.

It is an arithmetic number, because the mean of its divisors is an integer number (104500).

2³⁹⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

397081 is a deficient number, since it is larger than the sum of its proper divisors (20919).

397081 is a wasteful number, since it uses less digits than its factorization.

397081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20918.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 397081 is about 630.1436344200. The cubic root of 397081 is about 73.5009640918.

The spelling of 397081 in words is "three hundred ninety-seven thousand, eighty-one".