99999715 has 8 divisors (see below), whose sum is σ = 123243120. Its totient is φ = 77837472.

The previous prime is 99999703. The next prime is 99999721. The reversal of 99999715 is 51799999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99999715 - 2⁷ = 99999587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99999715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270085 + ... + 270454.

It is an arithmetic number, because the mean of its divisors is an integer number (15405390).

Almost surely, 2^99999715 is an apocalyptic number.

99999715 is a deficient number, since it is larger than the sum of its proper divisors (23243405).

99999715 is a wasteful number, since it uses less digits than its factorization.

99999715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540581.

The product of its digits is 2066715, while the sum is 58.

The square root of 99999715 is about 9999.9857499898. The cubic root of 99999715 is about 464.1584424099.

The spelling of 99999715 in words is "ninety-nine million, nine hundred ninety-nine thousand, seven hundred fifteen".