108155839 has 4 divisors (see below), whose sum is σ = 117988200. Its totient is φ = 98323480.

The previous prime is 108155833. The next prime is 108155893. The reversal of 108155839 is 938551801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938551801 = 11 ⋅85322891.

It is a cyclic number.

It is not a de Polignac number, because 108155839 - 2⁷ = 108155711 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108155833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4916164 + ... + 4916185.

It is an arithmetic number, because the mean of its divisors is an integer number (29497050).

Almost surely, 2^108155839 is an apocalyptic number.

108155839 is a deficient number, since it is larger than the sum of its proper divisors (9832361).

108155839 is an equidigital number, since it uses as much as digits as its factorization.

108155839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832360.

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 108155839 is about 10399.7999499990. The cubic root of 108155839 is about 476.4492601297.

The spelling of 108155839 in words is "one hundred eight million, one hundred fifty-five thousand, eight hundred thirty-nine".