99579121 has 8 divisors (see below), whose sum is σ = 104166720. Its totient is φ = 95013072.

The previous prime is 99579107. The next prime is 99579191. The reversal of 99579121 is 12197599.

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

It is a cyclic number.

It is not a de Polignac number, because 99579121 - 2⁷ = 99578993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99579191) 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, 4471 + ... + 14803.

It is an arithmetic number, because the mean of its divisors is an integer number (13020840).

Almost surely, 2^99579121 is an apocalyptic number.

It is an amenable number.

99579121 is a deficient number, since it is larger than the sum of its proper divisors (4587599).

99579121 is a wasteful number, since it uses less digits than its factorization.

99579121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775.

The product of its digits is 51030, while the sum is 43.

The square root of 99579121 is about 9978.9338608891. The cubic root of 99579121 is about 463.5067852336.

The spelling of 99579121 in words is "ninety-nine million, five hundred seventy-nine thousand, one hundred twenty-one".