108418639 has 12 divisors (see below), whose sum is σ = 131626864. Its totient is φ = 87462144.

The previous prime is 108418601. The next prime is 108418669. The reversal of 108418639 is 936814801.

It is not a de Polignac number, because 108418639 - 2¹¹ = 108416591 is a prime.

It is a super-2 number, since 2×108418639² = 23509202565224642, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108418669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24774 + ... + 28819.

Almost surely, 2^108418639 is an apocalyptic number.

108418639 is a deficient number, since it is larger than the sum of its proper divisors (23208225).

108418639 is an equidigital number, since it uses as much as digits as its factorization.

108418639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53634 (or 53617 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 108418639 is about 10412.4271426022. The cubic root of 108418639 is about 476.8348444551.

The spelling of 108418639 in words is "one hundred eight million, four hundred eighteen thousand, six hundred thirty-nine".