999999315 has 48 divisors (see below), whose sum is σ = 2049278400. Its totient is φ = 441374976.

The previous prime is 999999229. The next prime is 999999323. The reversal of 999999315 is 513999999.

It is not a de Polignac number, because 999999315 - 2⁸ = 999999059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45600 + ... + 63869.

It is an arithmetic number, because the mean of its divisors is an integer number (42693300).

Almost surely, 2^999999315 is an apocalyptic number.

999999315 is an abundant number, since it is smaller than the sum of its proper divisors (1049279085).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999999315 is a wasteful number, since it uses less digits than its factorization.

999999315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109516 (or 109513 counting only the distinct ones).

The product of its digits is 7971615, while the sum is 63.

The square root of 999999315 is about 31622.7657708810. The cubic root of 999999315 is about 999.9997716666. Note that the first 3 decimals are identical.

The spelling of 999999315 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred fifteen".