99579918 has 16 divisors (see below), whose sum is σ = 199288656. Its totient is φ = 33171840.

The previous prime is 99579917. The next prime is 99579947. The reversal of 99579918 is 81997599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99579917) 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, 6808 + ... + 15668.

It is an arithmetic number, because the mean of its divisors is an integer number (12455541).

Almost surely, 2^99579918 is an apocalyptic number.

99579918 is an abundant number, since it is smaller than the sum of its proper divisors (99708738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99579918 is a wasteful number, since it uses less digits than its factorization.

99579918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10739.

The product of its digits is 1837080, while the sum is 57.

The square root of 99579918 is about 9978.9737949350. The cubic root of 99579918 is about 463.5080218178.

The spelling of 99579918 in words is "ninety-nine million, five hundred seventy-nine thousand, nine hundred eighteen".