117983 has 4 divisors (see below), whose sum is σ = 119040. Its totient is φ = 116928.

The previous prime is 117979. The next prime is 117989. The reversal of 117983 is 389711.

117983 is nontrivially palindromic in base 11.

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: 389711 = 7 ⋅55673.

It is a cyclic number.

It is not a de Polignac number, because 117983 - 2² = 117979 is a prime.

It is a d-powerful number, because it can be written as 1 + 1 + 9² + 7⁶ + 8 + 3⁵ .

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117989) 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, 338 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (29760).

2¹¹⁷⁹⁸³ is an apocalyptic number.

117983 is a deficient number, since it is larger than the sum of its proper divisors (1057).

117983 is an equidigital number, since it uses as much as digits as its factorization.

117983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056.

The product of its digits is 1512, while the sum is 29.

The square root of 117983 is about 343.4865353984. The cubic root of 117983 is about 49.0463257570.

The spelling of 117983 in words is "one hundred seventeen thousand, nine hundred eighty-three".