99299309 has 2 divisors, whose sum is σ = 99299310. Its totient is φ = 99299308.

The previous prime is 99299281. The next prime is 99299311. The reversal of 99299309 is 90399299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96138025 + 3161284 = 9805^2 + 1778^2 .

It is an emirp because it is prime and its reverse (90399299) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99299309 is a prime.

Together with 99299311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99299359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49649654 + 49649655.

It is an arithmetic number, because the mean of its divisors is an integer number (49649655).

Almost surely, 2^99299309 is an apocalyptic number.

It is an amenable number.

99299309 is a deficient number, since it is larger than the sum of its proper divisors (1).

99299309 is an equidigital number, since it uses as much as digits as its factorization.

99299309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 50.

The square root of 99299309 is about 9964.9038630586. The cubic root of 99299309 is about 463.0722348723.

The spelling of 99299309 in words is "ninety-nine million, two hundred ninety-nine thousand, three hundred nine".