397863 has 6 divisors (see below), whose sum is σ = 574704. Its totient is φ = 265236.

The previous prime is 397849. The next prime is 397867. The reversal of 397863 is 368793.

It is not a de Polignac number, because 397863 - 2⁶ = 397799 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397863.

It is not an unprimeable number, because it can be changed into a prime (397867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22095 + ... + 22112.

It is an arithmetic number, because the mean of its divisors is an integer number (95784).

2³⁹⁷⁸⁶³ is an apocalyptic number.

397863 is a deficient number, since it is larger than the sum of its proper divisors (176841).

397863 is a wasteful number, since it uses less digits than its factorization.

397863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44213 (or 44210 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 397863 is about 630.7638226785. The cubic root of 397863 is about 73.5491826866.

The spelling of 397863 in words is "three hundred ninety-seven thousand, eight hundred sixty-three".