397955 has 16 divisors (see below), whose sum is σ = 518400. Its totient is φ = 292320.

The previous prime is 397951. The next prime is 397963. The reversal of 397955 is 559793.

It is not a de Polignac number, because 397955 - 2² = 397951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397951) 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 in 15 ways as a sum of consecutive naturals, for example, 5570 + ... + 5640.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2³⁹⁷⁹⁵⁵ is an apocalyptic number.

397955 is a deficient number, since it is larger than the sum of its proper divisors (120445).

397955 is a wasteful number, since it uses less digits than its factorization.

397955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154.

The product of its digits is 42525, while the sum is 38.

The square root of 397955 is about 630.8367459177. The cubic root of 397955 is about 73.5548513073.

The spelling of 397955 in words is "three hundred ninety-seven thousand, nine hundred fifty-five".