117939 has 4 divisors (see below), whose sum is σ = 157256. Its totient is φ = 78624.

The previous prime is 117937. The next prime is 117959. The reversal of 117939 is 939711.

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

It is not a de Polignac number, because 117939 - 2¹ = 117937 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117937) 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, 19654 + ... + 19659.

It is an arithmetic number, because the mean of its divisors is an integer number (39314).

2¹¹⁷⁹³⁹ is an apocalyptic number.

117939 is a deficient number, since it is larger than the sum of its proper divisors (39317).

117939 is an equidigital number, since it uses as much as digits as its factorization.

117939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39316.

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

The square root of 117939 is about 343.4224803358. The cubic root of 117939 is about 49.0402279670.

The spelling of 117939 in words is "one hundred seventeen thousand, nine hundred thirty-nine".