159944 has 8 divisors (see below), whose sum is σ = 299910. Its totient is φ = 79968.

The previous prime is 159937. The next prime is 159977. The reversal of 159944 is 449951.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 28900 = 362^2 + 170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 159944.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159944.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9989 + ... + 10004.

2¹⁵⁹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

159944 is a deficient number, since it is larger than the sum of its proper divisors (139966).

159944 is a wasteful number, since it uses less digits than its factorization.

159944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19999 (or 19995 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 159944 is about 399.9299938739. The cubic root of 159944 is about 54.2820179517.

The spelling of 159944 in words is "one hundred fifty-nine thousand, nine hundred forty-four".