397995 has 24 divisors (see below), whose sum is σ = 693936. Its totient is φ = 194688.

The previous prime is 397981. The next prime is 398011. The reversal of 397995 is 599793.

It is a happy number.

It is not a de Polignac number, because 397995 - 2⁵ = 397963 is a prime.

397995 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2457 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (28914).

2³⁹⁷⁹⁹⁵ is an apocalyptic number.

397995 is a deficient number, since it is larger than the sum of its proper divisors (295941).

397995 is a wasteful number, since it uses less digits than its factorization.

397995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 178 counting only the distinct ones).

The product of its digits is 76545, while the sum is 42.

The square root of 397995 is about 630.8684490446. The cubic root of 397995 is about 73.5573156525.

The spelling of 397995 in words is "three hundred ninety-seven thousand, nine hundred ninety-five".