397393599 has 4 divisors (see below), whose sum is σ = 529858136. Its totient is φ = 264929064.

The previous prime is 397393567. The next prime is 397393651. The reversal of 397393599 is 995393793.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 397393599 - 2⁵ = 397393567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397393519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66232264 + ... + 66232269.

It is an arithmetic number, because the mean of its divisors is an integer number (132464534).

Almost surely, 2^397393599 is an apocalyptic number.

397393599 is a deficient number, since it is larger than the sum of its proper divisors (132464537).

397393599 is a wasteful number, since it uses less digits than its factorization.

397393599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132464536.

The product of its digits is 6200145, while the sum is 57.

The square root of 397393599 is about 19934.7334820408. The cubic root of 397393599 is about 735.2024672449.

The spelling of 397393599 in words is "three hundred ninety-seven million, three hundred ninety-three thousand, five hundred ninety-nine".