159986 has 8 divisors (see below), whose sum is σ = 241920. Its totient is φ = 79348.

The previous prime is 159979. The next prime is 160001. The reversal of 159986 is 689951.

159986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

Its product of digits (19440) is a multiple of the sum of its prime divisors (648).

It is a Curzon number.

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2¹⁵⁹⁹⁸⁶ is an apocalyptic number.

159986 is a deficient number, since it is larger than the sum of its proper divisors (81934).

159986 is a wasteful number, since it uses less digits than its factorization.

159986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 19440, while the sum is 38.

The square root of 159986 is about 399.9824996172. The cubic root of 159986 is about 54.2867688754.

It can be divided in two parts, 15 and 9986, that added together give a palindrome (10001).

The spelling of 159986 in words is "one hundred fifty-nine thousand, nine hundred eighty-six".