159934986 has 40 divisors (see below), whose sum is σ = 359793984. Its totient is φ = 53100360.

The previous prime is 159934981. The next prime is 159934987. The reversal of 159934986 is 689439951.

159934986 is a `hidden beast` number, since 1 + 599 + 3 + 49 + 8 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (159934981) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42081 + ... + 45723.

Almost surely, 2^159934986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159934986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179896992).

159934986 is an abundant number, since it is smaller than the sum of its proper divisors (199858998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159934986 is a wasteful number, since it uses less digits than its factorization.

159934986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3928 (or 3919 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 159934986 is about 12646.5404755609. The cubic root of 159934986 is about 542.8099820460.

It can be divided in two parts, 1599 and 34986, that added together give a triangular number (36585 = T₂₇₀).

The spelling of 159934986 in words is "one hundred fifty-nine million, nine hundred thirty-four thousand, nine hundred eighty-six".