117739 has 4 divisors (see below), whose sum is σ = 118440. Its totient is φ = 117040.

The previous prime is 117731. The next prime is 117751. The reversal of 117739 is 937711.

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: 937711 = 41 ⋅22871.

It is a cyclic number.

It is not a de Polignac number, because 117739 - 2³ = 117731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117731) 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, 72 + ... + 490.

It is an arithmetic number, because the mean of its divisors is an integer number (29610).

117739 is a Friedman number, since it can be written as 91+(7*7)^3-1, using all its digits and the basic arithmetic operations.

2¹¹⁷⁷³⁹ is an apocalyptic number.

117739 is a deficient number, since it is larger than the sum of its proper divisors (701).

117739 is an equidigital number, since it uses as much as digits as its factorization.

117739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its digits is 1323, while the sum is 28.

The square root of 117739 is about 343.1311702542. The cubic root of 117739 is about 49.0124916091.

Subtracting from 117739 its sum of digits (28), we obtain a palindrome (117711).

It can be divided in two parts, 11 and 7739, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 117739 in words is "one hundred seventeen thousand, seven hundred thirty-nine".