397923 has 16 divisors (see below), whose sum is σ = 568320. Its totient is φ = 247104.

The previous prime is 397921. The next prime is 397939. The reversal of 397923 is 329793.

397923 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 397923 - 2¹ = 397921 is a prime.

It is an Ulam number.

397923 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4998 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (35520).

2³⁹⁷⁹²³ is an apocalyptic number.

397923 is a deficient number, since it is larger than the sum of its proper divisors (170397).

397923 is a wasteful number, since it uses less digits than its factorization.

397923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178.

The product of its digits is 10206, while the sum is 33.

The square root of 397923 is about 630.8113822689. The cubic root of 397923 is about 73.5528797122.

The spelling of 397923 in words is "three hundred ninety-seven thousand, nine hundred twenty-three".