99959577 has 4 divisors (see below), whose sum is σ = 133279440. Its totient is φ = 66639716.

The previous prime is 99959521. The next prime is 99959591. The reversal of 99959577 is 77595999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99959577 - 2¹⁰ = 99958553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99959577.

It is not an unprimeable number, because it can be changed into a prime (99959077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16659927 + ... + 16659932.

It is an arithmetic number, because the mean of its divisors is an integer number (33319860).

Almost surely, 2^99959577 is an apocalyptic number.

It is an amenable number.

99959577 is a deficient number, since it is larger than the sum of its proper divisors (33319863).

99959577 is a wasteful number, since it uses less digits than its factorization.

99959577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33319862.

The product of its digits is 8037225, while the sum is 60.

The square root of 99959577 is about 9997.9786457063. The cubic root of 99959577 is about 464.0963326171.

The spelling of 99959577 in words is "ninety-nine million, nine hundred fifty-nine thousand, five hundred seventy-seven".