397560013 has 4 divisors (see below), whose sum is σ = 397624480. Its totient is φ = 397495548.

The previous prime is 397559999. The next prime is 397560041. The reversal of 397560013 is 310065793.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310065793 = 947 ⋅327419.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397560013 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 (397560613) 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, 21873 + ... + 35686.

It is an arithmetic number, because the mean of its divisors is an integer number (99406120).

Almost surely, 2^397560013 is an apocalyptic number.

It is an amenable number.

397560013 is a deficient number, since it is larger than the sum of its proper divisors (64467).

397560013 is an equidigital number, since it uses as much as digits as its factorization.

397560013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64466.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 397560013 is about 19938.9070161832. The cubic root of 397560013 is about 735.3050782829.

The spelling of 397560013 in words is "three hundred ninety-seven million, five hundred sixty thousand, thirteen".