397323793 has 4 divisors (see below), whose sum is σ = 398728048. Its totient is φ = 395919540.

The previous prime is 397323791. The next prime is 397323803.

397323793 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397323793 - 2¹ = 397323791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397323791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701703 + ... + 702268.

It is an arithmetic number, because the mean of its divisors is an integer number (99682012).

Almost surely, 2^397323793 is an apocalyptic number.

It is an amenable number.

397323793 is a deficient number, since it is larger than the sum of its proper divisors (1404255).

397323793 is a wasteful number, since it uses less digits than its factorization.

397323793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404254.

The product of its digits is 642978, while the sum is 46.

The square root of 397323793 is about 19932.9825415064. The cubic root of 397323793 is about 735.1594162673.

It can be divided in two parts, 397 and 323793, that multiplied together give a palindrome (128545821).

The spelling of 397323793 in words is "three hundred ninety-seven million, three hundred twenty-three thousand, seven hundred ninety-three".