99320309 has 12 divisors (see below), whose sum is σ = 109761708. Its totient is φ = 89802240.

The previous prime is 99320297. The next prime is 99320329. The reversal of 99320309 is 90302399.

It can be written as a sum of positive squares in 2 ways, for example, as 16564900 + 82755409 = 4070^2 + 9097^2 .

It is a de Polignac number, because none of the positive numbers 2^k-99320309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99320329) 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, 21227 + ... + 25479.

It is an arithmetic number, because the mean of its divisors is an integer number (9146809).

Almost surely, 2^99320309 is an apocalyptic number.

It is an amenable number.

99320309 is a deficient number, since it is larger than the sum of its proper divisors (10441399).

99320309 is a wasteful number, since it uses less digits than its factorization.

99320309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468 (or 4457 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 99320309 is about 9965.9575054282. The cubic root of 99320309 is about 463.1048763599.

The spelling of 99320309 in words is "ninety-nine million, three hundred twenty thousand, three hundred nine".