8389918 has 16 divisors (see below), whose sum is σ = 12947760. Its totient is φ = 4075776.

The previous prime is 8389907. The next prime is 8389919. The reversal of 8389918 is 8199838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8389919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11080 + ... + 11812.

It is an arithmetic number, because the mean of its divisors is an integer number (809235).

Almost surely, 2^8389918 is an apocalyptic number.

8389918 is a deficient number, since it is larger than the sum of its proper divisors (4557842).

8389918 is a wasteful number, since it uses less digits than its factorization.

8389918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891.

The product of its digits is 124416, while the sum is 46.

The square root of 8389918 is about 2896.5355167855. The cubic root of 8389918 is about 203.1979109618.

The spelling of 8389918 in words is "eight million, three hundred eighty-nine thousand, nine hundred eighteen".