8616389 has 4 divisors (see below), whose sum is σ = 8697024. Its totient is φ = 8535756.

The previous prime is 8616379. The next prime is 8616397. The reversal of 8616389 is 9836168.

It is a happy number.

8616389 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 8616389 - 2⁴ = 8616373 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 (8616319) 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, 40157 + ... + 40370.

It is an arithmetic number, because the mean of its divisors is an integer number (2174256).

Almost surely, 2^8616389 is an apocalyptic number.

It is an amenable number.

8616389 is a deficient number, since it is larger than the sum of its proper divisors (80635).

8616389 is a wasteful number, since it uses less digits than its factorization.

8616389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80634.

The product of its digits is 62208, while the sum is 41.

The square root of 8616389 is about 2935.3686310240. The cubic root of 8616389 is about 205.0100252880.

The spelling of 8616389 in words is "eight million, six hundred sixteen thousand, three hundred eighty-nine".