99304321 has 2 divisors, whose sum is σ = 99304322. Its totient is φ = 99304320.

The previous prime is 99304319. The next prime is 99304349. The reversal of 99304321 is 12340399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 33872400 = 8089^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 99304321 - 2¹ = 99304319 is a prime.

It is a super-2 number, since 2×99304321² = 19722696338542082, which contains 22 as substring.

Together with 99304319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99304421) 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 as a sum of consecutive naturals, namely, 49652160 + 49652161.

It is an arithmetic number, because the mean of its divisors is an integer number (49652161).

Almost surely, 2^99304321 is an apocalyptic number.

It is an amenable number.

99304321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99304321 is an equidigital number, since it uses as much as digits as its factorization.

99304321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 99304321 is about 9965.1553424922. The cubic root of 99304321 is about 463.0800257254.

The spelling of 99304321 in words is "ninety-nine million, three hundred four thousand, three hundred twenty-one".