397822 has 16 divisors (see below), whose sum is σ = 651600. Its totient is φ = 181944.

The previous prime is 397811. The next prime is 397829. The reversal of 397822 is 228793.

397822 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13704 + ... + 13732.

It is an arithmetic number, because the mean of its divisors is an integer number (40725).

2³⁹⁷⁸²² is an apocalyptic number.

397822 is a deficient number, since it is larger than the sum of its proper divisors (253778).

397822 is an equidigital number, since it uses as much as digits as its factorization.

397822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 50 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 397822 is about 630.7313215625. The cubic root of 397822 is about 73.5466561719.

The spelling of 397822 in words is "three hundred ninety-seven thousand, eight hundred twenty-two".