99117959 has 2 divisors, whose sum is σ = 99117960. Its totient is φ = 99117958.

The previous prime is 99117937. The next prime is 99117983. The reversal of 99117959 is 95971199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99117959 - 2¹² = 99113863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99117059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49558979 + 49558980.

It is an arithmetic number, because the mean of its divisors is an integer number (49558980).

Almost surely, 2^99117959 is an apocalyptic number.

99117959 is a deficient number, since it is larger than the sum of its proper divisors (1).

99117959 is an equidigital number, since it uses as much as digits as its factorization.

99117959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 50.

The square root of 99117959 is about 9955.8002691898. The cubic root of 99117959 is about 462.7901606545.

The spelling of 99117959 in words is "ninety-nine million, one hundred seventeen thousand, nine hundred fifty-nine".