99579887 has 8 divisors (see below), whose sum is σ = 110944512. Its totient is φ = 88600600.

The previous prime is 99579869. The next prime is 99579899. The reversal of 99579887 is 78897599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99579887 - 2²⁰ = 98531311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99579827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95789 + ... + 96822.

It is an arithmetic number, because the mean of its divisors is an integer number (13868064).

Almost surely, 2^99579887 is an apocalyptic number.

99579887 is a deficient number, since it is larger than the sum of its proper divisors (11364625).

99579887 is a wasteful number, since it uses less digits than its factorization.

99579887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192669.

The product of its digits is 11430720, while the sum is 62.

The square root of 99579887 is about 9978.9722416690. The cubic root of 99579887 is about 463.5079737199.

The spelling of 99579887 in words is "ninety-nine million, five hundred seventy-nine thousand, eight hundred eighty-seven".