99097209 has 16 divisors (see below), whose sum is σ = 147259840. Its totient is φ = 65862720.

The previous prime is 99097189. The next prime is 99097247. The reversal of 99097209 is 90279099.

It is not a de Polignac number, because 99097209 - 2⁷ = 99097081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99097249) 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, 3654 + ... + 14544.

It is an arithmetic number, because the mean of its divisors is an integer number (9203740).

Almost surely, 2^99097209 is an apocalyptic number.

It is an amenable number.

99097209 is a deficient number, since it is larger than the sum of its proper divisors (48162631).

99097209 is a wasteful number, since it uses less digits than its factorization.

99097209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11237 (or 11231 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 99097209 is about 9954.7581085630. The cubic root of 99097209 is about 462.7578638971.

The spelling of 99097209 in words is "ninety-nine million, ninety-seven thousand, two hundred nine".