8712889 has 4 divisors (see below), whose sum is σ = 8728720. Its totient is φ = 8697060.

The previous prime is 8712863. The next prime is 8712919. The reversal of 8712889 is 9882178.

8712889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8712889 - 2⁷ = 8712761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8712859) 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, 7059 + ... + 8200.

It is an arithmetic number, because the mean of its divisors is an integer number (2182180).

Almost surely, 2^8712889 is an apocalyptic number.

It is an amenable number.

8712889 is a deficient number, since it is larger than the sum of its proper divisors (15831).

8712889 is a wasteful number, since it uses less digits than its factorization.

8712889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15830.

The product of its digits is 64512, while the sum is 43.

The square root of 8712889 is about 2951.7603222484. The cubic root of 8712889 is about 205.7725283122.

The spelling of 8712889 in words is "eight million, seven hundred twelve thousand, eight hundred eighty-nine".