99158915 has 4 divisors (see below), whose sum is σ = 118990704. Its totient is φ = 79327128.

The previous prime is 99158897. The next prime is 99158971. The reversal of 99158915 is 51985199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51985199 = 7 ⋅7426457.

It is a cyclic number.

It is not a de Polignac number, because 99158915 - 2¹⁴ = 99142531 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 99158915.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9915887 + ... + 9915896.

It is an arithmetic number, because the mean of its divisors is an integer number (29747676).

Almost surely, 2^99158915 is an apocalyptic number.

99158915 is a deficient number, since it is larger than the sum of its proper divisors (19831789).

99158915 is a wasteful number, since it uses less digits than its factorization.

99158915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831788.

The product of its digits is 145800, while the sum is 47.

The square root of 99158915 is about 9957.8569481591. The cubic root of 99158915 is about 462.8538942233.

The spelling of 99158915 in words is "ninety-nine million, one hundred fifty-eight thousand, nine hundred fifteen".