8579989 has 12 divisors (see below), whose sum is σ = 9844128. Its totient is φ = 7458440.

The previous prime is 8579981. The next prime is 8579999. The reversal of 8579989 is 9899758.

8579989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8579989 - 2³ = 8579981 is a prime.

It is a super-2 number, since 2×8579989² = 147232422480242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8579981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1242 + ... + 4324.

It is an arithmetic number, because the mean of its divisors is an integer number (820344).

Almost surely, 2^8579989 is an apocalyptic number.

It is an amenable number.

8579989 is a deficient number, since it is larger than the sum of its proper divisors (1264139).

8579989 is a wasteful number, since it uses less digits than its factorization.

8579989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128 (or 3117 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 55.

The square root of 8579989 is about 2929.1618255057. The cubic root of 8579989 is about 204.7209290117.

The spelling of 8579989 in words is "eight million, five hundred seventy-nine thousand, nine hundred eighty-nine".