108618839 has 20 divisors (see below), whose sum is σ = 133439640. Its totient is φ = 88164720.

The previous prime is 108618821. The next prime is 108618841. The reversal of 108618839 is 938816801.

It is a happy number.

It is not a de Polignac number, because 108618839 - 2¹² = 108614743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 108618839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108668839) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44429 + ... + 46809.

It is an arithmetic number, because the mean of its divisors is an integer number (6671982).

Almost surely, 2^108618839 is an apocalyptic number.

108618839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

108618839 is a deficient number, since it is larger than the sum of its proper divisors (24820801).

108618839 is an frugal number, since it uses more digits than its factorization.

108618839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 108618839 is about 10422.0362213917. The cubic root of 108618839 is about 477.1281631390.

The spelling of 108618839 in words is "one hundred eight million, six hundred eighteen thousand, eight hundred thirty-nine".