8865989 has 16 divisors (see below), whose sum is σ = 10368000. Its totient is φ = 7495920.

The previous prime is 8865973. The next prime is 8865991. The reversal of 8865989 is 9895688.

It is a cyclic number.

It is not a de Polignac number, because 8865989 - 2⁴ = 8865973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8865989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8865919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11972 + ... + 12690.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^8865989 is an apocalyptic number.

It is an amenable number.

8865989 is a deficient number, since it is larger than the sum of its proper divisors (1502011).

8865989 is a wasteful number, since it uses less digits than its factorization.

8865989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its digits is 1244160, while the sum is 53.

The square root of 8865989 is about 2977.5810652273. The cubic root of 8865989 is about 206.9707925526.

The spelling of 8865989 in words is "eight million, eight hundred sixty-five thousand, nine hundred eighty-nine".