8579985881 has 4 divisors (see below), whose sum is σ = 8598517632. Its totient is φ = 8561454132.

The previous prime is 8579985859. The next prime is 8579985889. The reversal of 8579985881 is 1885899758.

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 8579985881 - 2²⁶ = 8512877017 is a prime.

It is a super-2 number, since 2×8579985881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8579985889) 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, 9265181 + ... + 9266106.

It is an arithmetic number, because the mean of its divisors is an integer number (2149629408).

Almost surely, 2^8579985881 is an apocalyptic number.

It is an amenable number.

8579985881 is a deficient number, since it is larger than the sum of its proper divisors (18531751).

8579985881 is a wasteful number, since it uses less digits than its factorization.

8579985881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18531750.

The product of its digits is 58060800, while the sum is 68.

The square root of 8579985881 is about 92628.2132020261. The cubic root of 8579985881 is about 2047.2090420500.

The spelling of 8579985881 in words is "eight billion, five hundred seventy-nine million, nine hundred eighty-five thousand, eight hundred eighty-one".