99109205 has 24 divisors (see below), whose sum is σ = 131272488. Its totient is φ = 71774976.

The previous prime is 99109193. The next prime is 99109291. The reversal of 99109205 is 50290199.

It can be written as a sum of positive squares in 12 ways, for example, as 14303524 + 84805681 = 3782^2 + 9209^2 .

It is not a de Polignac number, because 99109205 - 2⁴ = 99109189 is a prime.

It is a Duffinian number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 43679 + ... + 45891.

It is an arithmetic number, because the mean of its divisors is an integer number (5469687).

Almost surely, 2^99109205 is an apocalyptic number.

It is an amenable number.

99109205 is a deficient number, since it is larger than the sum of its proper divisors (32163283).

99109205 is a wasteful number, since it uses less digits than its factorization.

99109205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2284 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 99109205 is about 9955.3606162710. The cubic root of 99109205 is about 462.7765358638.

The spelling of 99109205 in words is "ninety-nine million, one hundred nine thousand, two hundred five".