117986 has 16 divisors (see below), whose sum is σ = 200448. Its totient is φ = 51600.

The previous prime is 117979. The next prime is 117989. The reversal of 117986 is 689711.

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 7 ways as a sum of consecutive naturals, for example, 596 + ... + 768.

It is an arithmetic number, because the mean of its divisors is an integer number (12528).

2¹¹⁷⁹⁸⁶ is an apocalyptic number.

117986 is a deficient number, since it is larger than the sum of its proper divisors (82462).

117986 is a wasteful number, since it uses less digits than its factorization.

117986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its digits is 3024, while the sum is 32.

The square root of 117986 is about 343.4909023541. The cubic root of 117986 is about 49.0467414602.

It can be divided in two parts, 11 and 7986, that added together give a palindrome (7997).

The spelling of 117986 in words is "one hundred seventeen thousand, nine hundred eighty-six".