397796507 has 4 divisors (see below), whose sum is σ = 402589320. Its totient is φ = 393003696.

The previous prime is 397796471. The next prime is 397796527. The reversal of 397796507 is 705697793.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 397796507 - 2¹² = 397792411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397796527) 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, 2396282 + ... + 2396447.

It is an arithmetic number, because the mean of its divisors is an integer number (100647330).

Almost surely, 2^397796507 is an apocalyptic number.

397796507 is a deficient number, since it is larger than the sum of its proper divisors (4792813).

397796507 is an equidigital number, since it uses as much as digits as its factorization.

397796507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792812.

The product of its (nonzero) digits is 2500470, while the sum is 53.

The square root of 397796507 is about 19944.8365999825. The cubic root of 397796507 is about 735.4508514690.

The spelling of 397796507 in words is "three hundred ninety-seven million, seven hundred ninety-six thousand, five hundred seven".