397525793 has 4 divisors (see below), whose sum is σ = 454315200. Its totient is φ = 340736388.

The previous prime is 397525789. The next prime is 397525819.

397525793 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 397525793 - 2² = 397525789 is a prime.

It is a super-2 number, since 2×397525793² = 316053512200557698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397525703) 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, 28394693 + ... + 28394706.

It is an arithmetic number, because the mean of its divisors is an integer number (113578800).

Almost surely, 2^397525793 is an apocalyptic number.

It is an amenable number.

397525793 is a deficient number, since it is larger than the sum of its proper divisors (56789407).

397525793 is an equidigital number, since it uses as much as digits as its factorization.

397525793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56789406.

The product of its digits is 1786050, while the sum is 50.

The square root of 397525793 is about 19938.0488764573. The cubic root of 397525793 is about 735.2839805359.

The spelling of 397525793 in words is "three hundred ninety-seven million, five hundred twenty-five thousand, seven hundred ninety-three".