397265317 has 4 divisors (see below), whose sum is σ = 397566016. Its totient is φ = 396964620.

The previous prime is 397265257. The next prime is 397265321. The reversal of 397265317 is 713562793.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-397265317 is a prime.

It is a super-2 number, since 2×397265317² = 315639464182220978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397265417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148359 + ... + 151012.

It is an arithmetic number, because the mean of its divisors is an integer number (99391504).

Almost surely, 2^397265317 is an apocalyptic number.

It is an amenable number.

397265317 is a deficient number, since it is larger than the sum of its proper divisors (300699).

397265317 is a wasteful number, since it uses less digits than its factorization.

397265317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300698.

The product of its digits is 238140, while the sum is 43.

The square root of 397265317 is about 19931.5156724219. The cubic root of 397265317 is about 735.1233488819.

The spelling of 397265317 in words is "three hundred ninety-seven million, two hundred sixty-five thousand, three hundred seventeen".