8689918 has 4 divisors (see below), whose sum is σ = 13034880. Its totient is φ = 4344958.

The previous prime is 8689853. The next prime is 8689943. The reversal of 8689918 is 8199868.

It is a happy number.

8689918 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.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2172478 + ... + 2172481.

It is an arithmetic number, because the mean of its divisors is an integer number (3258720).

Almost surely, 2^8689918 is an apocalyptic number.

8689918 is a deficient number, since it is larger than the sum of its proper divisors (4344962).

8689918 is a wasteful number, since it uses less digits than its factorization.

8689918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344961.

The product of its digits is 248832, while the sum is 49.

The square root of 8689918 is about 2947.8666862665. The cubic root of 8689918 is about 205.5915335883.

The spelling of 8689918 in words is "eight million, six hundred eighty-nine thousand, nine hundred eighteen".