397922 has 16 divisors (see below), whose sum is σ = 699072. Its totient is φ = 166320.

The previous prime is 397921. The next prime is 397939. The reversal of 397922 is 229793.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397922.

It is not an unprimeable number, because it can be changed into a prime (397921) 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 7 ways as a sum of consecutive naturals, for example, 272 + ... + 932.

It is an arithmetic number, because the mean of its divisors is an integer number (43692).

2³⁹⁷⁹²² is an apocalyptic number.

397922 is a deficient number, since it is larger than the sum of its proper divisors (301150).

397922 is a wasteful number, since it uses less digits than its factorization.

397922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its digits is 6804, while the sum is 32.

The square root of 397922 is about 630.8105896384. The cubic root of 397922 is about 73.5528180982.

The spelling of 397922 in words is "three hundred ninety-seven thousand, nine hundred twenty-two".