99679169 has 2 divisors, whose sum is σ = 99679170. Its totient is φ = 99679168.

The previous prime is 99679163. The next prime is 99679201. The reversal of 99679169 is 96197699.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66178225 + 33500944 = 8135^2 + 5788^2 .

It is a cyclic number.

It is not a de Polignac number, because 99679169 - 2¹² = 99675073 is a prime.

It is a super-2 number, since 2×99679169² = 19871873465061122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99679163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49839584 + 49839585.

It is an arithmetic number, because the mean of its divisors is an integer number (49839585).

Almost surely, 2^99679169 is an apocalyptic number.

It is an amenable number.

99679169 is a deficient number, since it is larger than the sum of its proper divisors (1).

99679169 is an equidigital number, since it uses as much as digits as its factorization.

99679169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1653372, while the sum is 56.

The square root of 99679169 is about 9983.9455627522. The cubic root of 99679169 is about 463.6619630279.

The spelling of 99679169 in words is "ninety-nine million, six hundred seventy-nine thousand, one hundred sixty-nine".