8705389 has 24 divisors (see below), whose sum is σ = 11425536. Its totient is φ = 6552000.

The previous prime is 8705383. The next prime is 8705399. The reversal of 8705389 is 9835078.

8705389 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 8705389 - 2⁷ = 8705261 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 (8705383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16449 + ... + 16969.

It is an arithmetic number, because the mean of its divisors is an integer number (476064).

Almost surely, 2^8705389 is an apocalyptic number.

It is an amenable number.

8705389 is a deficient number, since it is larger than the sum of its proper divisors (2720147).

8705389 is a wasteful number, since it uses less digits than its factorization.

8705389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 8705389 is about 2950.4896203851. The cubic root of 8705389 is about 205.7134687973.

The spelling of 8705389 in words is "eight million, seven hundred five thousand, three hundred eighty-nine".