159983 has 4 divisors (see below), whose sum is σ = 161160. Its totient is φ = 158808.

The previous prime is 159979. The next prime is 160001. The reversal of 159983 is 389951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389951 = 41 ⋅9511.

It is a cyclic number.

It is not a de Polignac number, because 159983 - 2² = 159979 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159683) 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 3 ways as a sum of consecutive naturals, for example, 353 + ... + 666.

It is an arithmetic number, because the mean of its divisors is an integer number (40290).

2¹⁵⁹⁹⁸³ is an apocalyptic number.

159983 is a deficient number, since it is larger than the sum of its proper divisors (1177).

159983 is a wasteful number, since it uses less digits than its factorization.

159983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176.

The product of its digits is 9720, while the sum is 35.

The square root of 159983 is about 399.9787494355. The cubic root of 159983 is about 54.2864295513.

The spelling of 159983 in words is "one hundred fifty-nine thousand, nine hundred eighty-three".