315946979 has 6 divisors (see below), whose sum is σ = 318563916. Its totient is φ = 313333280.

The previous prime is 315946933. The next prime is 315946987. The reversal of 315946979 is 979649513.

It is a happy number.

It is not a de Polignac number, because 315946979 - 2⁸ = 315946723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315946979.

It is not an unprimeable number, because it can be changed into a prime (315946679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202667 + ... + 204219.

It is an arithmetic number, because the mean of its divisors is an integer number (53093986).

Almost surely, 2^315946979 is an apocalyptic number.

315946979 is a deficient number, since it is larger than the sum of its proper divisors (2616937).

315946979 is an frugal number, since it uses more digits than its factorization.

315946979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237 (or 1684 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 53.

The square root of 315946979 is about 17774.8974399292. The cubic root of 315946979 is about 681.0903635831.

The spelling of 315946979 in words is "three hundred fifteen million, nine hundred forty-six thousand, nine hundred seventy-nine".