8865389 has 8 divisors (see below), whose sum is σ = 9780792. Its totient is φ = 7983360.

The previous prime is 8865377. The next prime is 8865391. The reversal of 8865389 is 9835688.

8865389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 697225 + 8168164 = 835^2 + 2858^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8865389 - 2¹⁶ = 8799853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8865359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7784 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (1222599).

Almost surely, 2^8865389 is an apocalyptic number.

It is an amenable number.

8865389 is a deficient number, since it is larger than the sum of its proper divisors (915403).

8865389 is a wasteful number, since it uses less digits than its factorization.

8865389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16687.

The product of its digits is 414720, while the sum is 47.

The square root of 8865389 is about 2977.4803105982. The cubic root of 8865389 is about 206.9661235764.

Subtracting 8865389 from its reverse (9835688), we obtain a cube (970299 = 99³).

The spelling of 8865389 in words is "eight million, eight hundred sixty-five thousand, three hundred eighty-nine".