108839 has 4 divisors (see below), whose sum is σ = 109824. Its totient is φ = 107856.

The previous prime is 108827. The next prime is 108863. The reversal of 108839 is 938801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 938801 = 37 ⋅25373.

It is a cyclic number.

It is not a de Polignac number, because 108839 - 2¹² = 104743 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108869) 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, 302 + ... + 555.

It is an arithmetic number, because the mean of its divisors is an integer number (27456).

2¹⁰⁸⁸³⁹ is an apocalyptic number.

108839 is a deficient number, since it is larger than the sum of its proper divisors (985).

108839 is an equidigital number, since it uses as much as digits as its factorization.

108839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 108839 is about 329.9075628112. The cubic root of 108839 is about 47.7450311433.

The spelling of 108839 in words is "one hundred eight thousand, eight hundred thirty-nine".