84995579 has 4 divisors (see below), whose sum is σ = 86159976. Its totient is φ = 83831184.

The previous prime is 84995543. The next prime is 84995587. The reversal of 84995579 is 97559948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84995579 - 2²⁴ = 68218363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84995539) 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, 582089 + ... + 582234.

It is an arithmetic number, because the mean of its divisors is an integer number (21539994).

Almost surely, 2^84995579 is an apocalyptic number.

84995579 is a deficient number, since it is larger than the sum of its proper divisors (1164397).

84995579 is a wasteful number, since it uses less digits than its factorization.

84995579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164396.

The product of its digits is 4082400, while the sum is 56.

The square root of 84995579 is about 9219.3046917867. The cubic root of 84995579 is about 439.6753441880.

The spelling of 84995579 in words is "eighty-four million, nine hundred ninety-five thousand, five hundred seventy-nine".