99900915 has 8 divisors (see below), whose sum is σ = 159841488. Its totient is φ = 53280480.

The previous prime is 99900893. The next prime is 99900923. The reversal of 99900915 is 51900999.

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

It is not a de Polignac number, because 99900915 - 2⁵ = 99900883 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, 3330016 + ... + 3330045.

It is an arithmetic number, because the mean of its divisors is an integer number (19980186).

Almost surely, 2^99900915 is an apocalyptic number.

99900915 is a deficient number, since it is larger than the sum of its proper divisors (59940573).

99900915 is a wasteful number, since it uses less digits than its factorization.

99900915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660069.

The product of its (nonzero) digits is 32805, while the sum is 42.

The square root of 99900915 is about 9995.0445221620. The cubic root of 99900915 is about 464.0055287565.

The spelling of 99900915 in words is "ninety-nine million, nine hundred thousand, nine hundred fifteen".