86989918 has 8 divisors (see below), whose sum is σ = 138160512. Its totient is φ = 40936416.

The previous prime is 86989913. The next prime is 86989921. The reversal of 86989918 is 81998968.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86989913) 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, 1279230 + ... + 1279297.

It is an arithmetic number, because the mean of its divisors is an integer number (17270064).

Almost surely, 2^86989918 is an apocalyptic number.

86989918 is a deficient number, since it is larger than the sum of its proper divisors (51170594).

86989918 is a wasteful number, since it uses less digits than its factorization.

86989918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558546.

The product of its digits is 2239488, while the sum is 58.

The square root of 86989918 is about 9326.8385855015. The cubic root of 86989918 is about 443.0876451012.

The spelling of 86989918 in words is "eighty-six million, nine hundred eighty-nine thousand, nine hundred eighteen".