99905107 has 16 divisors (see below), whose sum is σ = 108103680. Its totient is φ = 91986048.

The previous prime is 99905101. The next prime is 99905111. The reversal of 99905107 is 70150999.

It is not a de Polignac number, because 99905107 - 2⁷ = 99904979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99905107.

It is not an unprimeable number, because it can be changed into a prime (99905101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272038 + ... + 272404.

It is an arithmetic number, because the mean of its divisors is an integer number (6756480).

Almost surely, 2^99905107 is an apocalyptic number.

99905107 is a deficient number, since it is larger than the sum of its proper divisors (8198573).

99905107 is a wasteful number, since it uses less digits than its factorization.

99905107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 99905107 is about 9995.2542238805. The cubic root of 99905107 is about 464.0120188004.

The spelling of 99905107 in words is "ninety-nine million, nine hundred five thousand, one hundred seven".