108139659 has 16 divisors (see below), whose sum is σ = 152054400. Its totient is φ = 68173056.

The previous prime is 108139639. The next prime is 108139679. The reversal of 108139659 is 956931801.

It is an interprime number because it is at equal distance from previous prime (108139639) and next prime (108139679).

It is not a de Polignac number, because 108139659 - 2⁵ = 108139627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108139659.

It is not an unprimeable number, because it can be changed into a prime (108139639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36952 + ... + 39770.

It is an arithmetic number, because the mean of its divisors is an integer number (9503400).

Almost surely, 2^108139659 is an apocalyptic number.

108139659 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

108139659 is a deficient number, since it is larger than the sum of its proper divisors (43914741).

108139659 is a wasteful number, since it uses less digits than its factorization.

108139659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 108139659 is about 10399.0220213249. The cubic root of 108139659 is about 476.4255001751.

The spelling of 108139659 in words is "one hundred eight million, one hundred thirty-nine thousand, six hundred fifty-nine".