99321169 has 2 divisors, whose sum is σ = 99321170. Its totient is φ = 99321168.

The previous prime is 99321163. The next prime is 99321197. The reversal of 99321169 is 96112399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81216144 + 18105025 = 9012^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 99321169 - 2⁷ = 99321041 is a prime.

It is a super-2 number, since 2×99321169² = 19729389223053122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99321163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49660584 + 49660585.

It is an arithmetic number, because the mean of its divisors is an integer number (49660585).

Almost surely, 2^99321169 is an apocalyptic number.

It is an amenable number.

99321169 is a deficient number, since it is larger than the sum of its proper divisors (1).

99321169 is an equidigital number, since it uses as much as digits as its factorization.

99321169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 40.

The square root of 99321169 is about 9966.0006522175. Note that the first 3 decimals coincide. The cubic root of 99321169 is about 463.1062130084.

The spelling of 99321169 in words is "ninety-nine million, three hundred twenty-one thousand, one hundred sixty-nine".