159939 has 12 divisors (see below), whose sum is σ = 248976. Its totient is φ = 98352.

The previous prime is 159937. The next prime is 159977. The reversal of 159939 is 939951.

It is not a de Polignac number, because 159939 - 2¹ = 159937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567 + ... + 800.

It is an arithmetic number, because the mean of its divisors is an integer number (20748).

2¹⁵⁹⁹³⁹ is an apocalyptic number.

159939 is a deficient number, since it is larger than the sum of its proper divisors (89037).

159939 is a wasteful number, since it uses less digits than its factorization.

159939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1383 counting only the distinct ones).

The product of its digits is 10935, while the sum is 36.

The square root of 159939 is about 399.9237427310. The cubic root of 159939 is about 54.2814523102.

The spelling of 159939 in words is "one hundred fifty-nine thousand, nine hundred thirty-nine".