99225909 has 12 divisors (see below), whose sum is σ = 143425152. Its totient is φ = 66105000.

The previous prime is 99225899. The next prime is 99225913. The reversal of 99225909 is 90952299.

It is not a de Polignac number, because 99225909 - 2⁸ = 99225653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99225409) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 14734 + ... + 20384.

It is an arithmetic number, because the mean of its divisors is an integer number (11952096).

Almost surely, 2^99225909 is an apocalyptic number.

It is an amenable number.

99225909 is a deficient number, since it is larger than the sum of its proper divisors (44199243).

99225909 is a wasteful number, since it uses less digits than its factorization.

99225909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7608 (or 7605 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 99225909 is about 9961.2202565750. The cubic root of 99225909 is about 462.9581089345.

The spelling of 99225909 in words is "ninety-nine million, two hundred twenty-five thousand, nine hundred nine".