113986 has 4 divisors (see below), whose sum is σ = 170982. Its totient is φ = 56992.

The previous prime is 113983. The next prime is 113989. The reversal of 113986 is 689311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689311 = 7 ⋅98473.

It is an interprime number because it is at equal distance from previous prime (113983) and next prime (113989).

It can be written as a sum of positive squares in only one way, i.e., 81225 + 32761 = 285^2 + 181^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28495 + ... + 28498.

2¹¹³⁹⁸⁶ is an apocalyptic number.

113986 is a deficient number, since it is larger than the sum of its proper divisors (56996).

113986 is an equidigital number, since it uses as much as digits as its factorization.

113986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56995.

The product of its digits is 1296, while the sum is 28.

The square root of 113986 is about 337.6181274754. The cubic root of 113986 is about 48.4860908851.

It can be divided in two parts, 1139 and 86, that added together give a triangular number (1225 = T₄₉).

The spelling of 113986 in words is "one hundred thirteen thousand, nine hundred eighty-six".