99999315 has 48 divisors (see below), whose sum is σ = 190689408. Its totient is φ = 48169728.

The previous prime is 99999307. The next prime is 99999323. The reversal of 99999315 is 51399999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99999307) and next prime (99999323).

It is not a de Polignac number, because 99999315 - 2³ = 99999307 is a prime.

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, 25677 + ... + 29313.

It is an arithmetic number, because the mean of its divisors is an integer number (3972696).

Almost surely, 2^99999315 is an apocalyptic number.

99999315 is a deficient number, since it is larger than the sum of its proper divisors (90690093).

99999315 is a wasteful number, since it uses less digits than its factorization.

99999315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708 (or 3705 counting only the distinct ones).

The product of its digits is 885735, while the sum is 54.

The square root of 99999315 is about 9999.9657499413. The cubic root of 99999315 is about 464.1578235294.

The spelling of 99999315 in words is "ninety-nine million, nine hundred ninety-nine thousand, three hundred fifteen".