113979 has 4 divisors (see below), whose sum is σ = 151976. Its totient is φ = 75984.

The previous prime is 113969. The next prime is 113983. The reversal of 113979 is 979311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979311 = 3 ⋅326437.

It is not a de Polignac number, because 113979 - 2⁴ = 113963 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113909) 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, 18994 + ... + 18999.

It is an arithmetic number, because the mean of its divisors is an integer number (37994).

2¹¹³⁹⁷⁹ is an apocalyptic number.

113979 is a deficient number, since it is larger than the sum of its proper divisors (37997).

113979 is an equidigital number, since it uses as much as digits as its factorization.

113979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37996.

The product of its digits is 1701, while the sum is 30.

The square root of 113979 is about 337.6077605743. The cubic root of 113979 is about 48.4850983376.

The spelling of 113979 in words is "one hundred thirteen thousand, nine hundred seventy-nine".