315855939 has 16 divisors (see below), whose sum is σ = 494313728. Its totient is φ = 175610592.

The previous prime is 315855893. The next prime is 315855973. The reversal of 315855939 is 939558513.

It is a happy number.

It is not a de Polignac number, because 315855939 - 2¹⁵ = 315823171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315855139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202477 + ... + 204030.

It is an arithmetic number, because the mean of its divisors is an integer number (30894608).

Almost surely, 2^315855939 is an apocalyptic number.

315855939 is a deficient number, since it is larger than the sum of its proper divisors (178457789).

315855939 is a wasteful number, since it uses less digits than its factorization.

315855939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406554.

The product of its digits is 729000, while the sum is 48.

The square root of 315855939 is about 17772.3363405040. The cubic root of 315855939 is about 681.0249386569.

The spelling of 315855939 in words is "three hundred fifteen million, eight hundred fifty-five thousand, nine hundred thirty-nine".