99724115 has 8 divisors (see below), whose sum is σ = 121354848. Its totient is φ = 78655360.

The previous prime is 99724099. The next prime is 99724129. The reversal of 99724115 is 51142799.

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

It is not a de Polignac number, because 99724115 - 2⁴ = 99724099 is a prime.

It is a super-2 number, since 2×99724115² = 19889798225066450, which contains 22 as substring.

It is a Duffinian number.

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, 140102 + ... + 140811.

It is an arithmetic number, because the mean of its divisors is an integer number (15169356).

Almost surely, 2^99724115 is an apocalyptic number.

99724115 is a deficient number, since it is larger than the sum of its proper divisors (21630733).

99724115 is a wasteful number, since it uses less digits than its factorization.

99724115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280989.

The product of its digits is 22680, while the sum is 38.

The square root of 99724115 is about 9986.1962227867. The cubic root of 99724115 is about 463.7316419766.

The spelling of 99724115 in words is "ninety-nine million, seven hundred twenty-four thousand, one hundred fifteen".