13159986 has 16 divisors (see below), whose sum is σ = 30080064. Its totient is φ = 3759984.

The previous prime is 13159981. The next prime is 13159987. The reversal of 13159986 is 68995131.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 313333 = 13159986 / (1 + 3 + 1 + 5 + 9 + 9 + 8 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13159981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156625 + ... + 156708.

It is an arithmetic number, because the mean of its divisors is an integer number (1880004).

Almost surely, 2^13159986 is an apocalyptic number.

13159986 is an abundant number, since it is smaller than the sum of its proper divisors (16920078).

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

13159986 is a wasteful number, since it uses less digits than its factorization.

13159986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313345.

The product of its digits is 58320, while the sum is 42.

The square root of 13159986 is about 3627.6694998304. The cubic root of 13159986 is about 236.0941044801.

The spelling of 13159986 in words is "thirteen million, one hundred fifty-nine thousand, nine hundred eighty-six".