99615169 has 2 divisors, whose sum is σ = 99615170. Its totient is φ = 99615168.

The previous prime is 99615167. The next prime is 99615179. The reversal of 99615169 is 96151699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56055169 + 43560000 = 7487^2 + 6600^2 .

It is a cyclic number.

It is not a de Polignac number, because 99615169 - 2¹ = 99615167 is a prime.

It is a super-2 number, since 2×99615169² = 19846363789797122, which contains 22 as substring.

Together with 99615167, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99615161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49807584 + 49807585.

It is an arithmetic number, because the mean of its divisors is an integer number (49807585).

Almost surely, 2^99615169 is an apocalyptic number.

It is an amenable number.

99615169 is a deficient number, since it is larger than the sum of its proper divisors (1).

99615169 is an equidigital number, since it uses as much as digits as its factorization.

99615169 is an evil number, because the sum of its binary digits is even.

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

The square root of 99615169 is about 9980.7399024321. The cubic root of 99615169 is about 463.5627088604.

The spelling of 99615169 in words is "ninety-nine million, six hundred fifteen thousand, one hundred sixty-nine".