397868 has 12 divisors (see below), whose sum is σ = 737352. Its totient is φ = 187200.

The previous prime is 397867. The next prime is 397897. The reversal of 397868 is 868793.

It is not an unprimeable number, because it can be changed into a prime (397867) 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 3 ways as a sum of consecutive naturals, for example, 2858 + ... + 2993.

It is an arithmetic number, because the mean of its divisors is an integer number (61446).

2³⁹⁷⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

397868 is a deficient number, since it is larger than the sum of its proper divisors (339484).

397868 is a wasteful number, since it uses less digits than its factorization.

397868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872 (or 5870 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 397868 is about 630.7677861147. The cubic root of 397868 is about 73.5494907862.

The spelling of 397868 in words is "three hundred ninety-seven thousand, eight hundred sixty-eight".