99901915 has 8 divisors (see below), whose sum is σ = 119936880. Its totient is φ = 79885152.

The previous prime is 99901909. The next prime is 99901951. The reversal of 99901915 is 51910999.

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 99901915 - 2¹³ = 99893723 is a prime.

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, 15852 + ... + 21238.

It is an arithmetic number, because the mean of its divisors is an integer number (14992110).

Almost surely, 2^99901915 is an apocalyptic number.

99901915 is a deficient number, since it is larger than the sum of its proper divisors (20034965).

99901915 is a wasteful number, since it uses less digits than its factorization.

99901915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101.

The product of its (nonzero) digits is 32805, while the sum is 43.

The square root of 99901915 is about 9995.0945468265. The cubic root of 99901915 is about 464.0070769704.

The spelling of 99901915 in words is "ninety-nine million, nine hundred one thousand, nine hundred fifteen".