159789 has 12 divisors (see below), whose sum is σ = 248064. Its totient is φ = 91224.

The previous prime is 159787. The next prime is 159791. The reversal of 159789 is 987951.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (159787) and next prime (159791).

It is not a de Polignac number, because 159789 - 2¹ = 159787 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159789.

It is not an unprimeable number, because it can be changed into a prime (159787) 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, 397 + ... + 690.

It is an arithmetic number, because the mean of its divisors is an integer number (20672).

2¹⁵⁹⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

159789 is a deficient number, since it is larger than the sum of its proper divisors (88275).

159789 is a wasteful number, since it uses less digits than its factorization.

159789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1097 counting only the distinct ones).

The product of its digits is 22680, while the sum is 39.

The square root of 159789 is about 399.7361629875. The cubic root of 159789 is about 54.2644775790.

The spelling of 159789 in words is "one hundred fifty-nine thousand, seven hundred eighty-nine".