103839 has 4 divisors (see below), whose sum is σ = 138456. Its totient is φ = 69224.

The previous prime is 103837. The next prime is 103841. The reversal of 103839 is 938301.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (103837) and next prime (103841).

It is a cyclic number.

It is not a de Polignac number, because 103839 - 2¹ = 103837 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17304 + ... + 17309.

It is an arithmetic number, because the mean of its divisors is an integer number (34614).

2¹⁰³⁸³⁹ is an apocalyptic number.

103839 is a deficient number, since it is larger than the sum of its proper divisors (34617).

103839 is an equidigital number, since it uses as much as digits as its factorization.

103839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34616.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 103839 is about 322.2405933460. The cubic root of 103839 is about 47.0024142415.

The spelling of 103839 in words is "one hundred three thousand, eight hundred thirty-nine".