99521299 has 12 divisors (see below), whose sum is σ = 104517000. Its totient is φ = 94755584.

The previous prime is 99521291. The next prime is 99521327. The reversal of 99521299 is 99212599.

It is not a de Polignac number, because 99521299 - 2³ = 99521291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99521291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221427 + ... + 221875.

It is an arithmetic number, because the mean of its divisors is an integer number (8709750).

Almost surely, 2^99521299 is an apocalyptic number.

99521299 is a deficient number, since it is larger than the sum of its proper divisors (4995701).

99521299 is a wasteful number, since it uses less digits than its factorization.

99521299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 891 counting only the distinct ones).

The product of its digits is 131220, while the sum is 46.

The square root of 99521299 is about 9976.0362369029. The cubic root of 99521299 is about 463.4170539787.

The spelling of 99521299 in words is "ninety-nine million, five hundred twenty-one thousand, two hundred ninety-nine".