113839 has 8 divisors (see below), whose sum is σ = 126720. Its totient is φ = 101400.

The previous prime is 113837. The next prime is 113843. The reversal of 113839 is 938311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113839 - 2¹ = 113837 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804 + ... + 934.

It is an arithmetic number, because the mean of its divisors is an integer number (15840).

2¹¹³⁸³⁹ is an apocalyptic number.

113839 is a deficient number, since it is larger than the sum of its proper divisors (12881).

113839 is a wasteful number, since it uses less digits than its factorization.

113839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its digits is 648, while the sum is 25.

The square root of 113839 is about 337.4003556607. The cubic root of 113839 is about 48.4652388463.

The spelling of 113839 in words is "one hundred thirteen thousand, eight hundred thirty-nine".