8723889 has 16 divisors (see below), whose sum is σ = 13061440. Its totient is φ = 5754240.

The previous prime is 8723887. The next prime is 8723893. The reversal of 8723889 is 9883278.

8723889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8723889 - 2¹ = 8723887 is a prime.

It is a super-2 number, since 2×8723889² = 152212478568642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8723887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954 + ... + 4284.

It is an arithmetic number, because the mean of its divisors is an integer number (816340).

Almost surely, 2^8723889 is an apocalyptic number.

It is an amenable number.

8723889 is a deficient number, since it is larger than the sum of its proper divisors (4337551).

8723889 is a wasteful number, since it uses less digits than its factorization.

8723889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437 (or 3431 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 8723889 is about 2953.6230294335. The cubic root of 8723889 is about 205.8590876584.

It can be divided in two parts, 872 and 3889, that added together give a square (4761 = 69²).

The spelling of 8723889 in words is "eight million, seven hundred twenty-three thousand, eight hundred eighty-nine".