159439 has 4 divisors (see below), whose sum is σ = 182224. Its totient is φ = 136656.

The previous prime is 159437. The next prime is 159457. The reversal of 159439 is 934951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159439 - 2¹ = 159437 is a prime.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 159439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11382 + ... + 11395.

It is an arithmetic number, because the mean of its divisors is an integer number (45556).

2¹⁵⁹⁴³⁹ is an apocalyptic number.

159439 is a deficient number, since it is larger than the sum of its proper divisors (22785).

159439 is an equidigital number, since it uses as much as digits as its factorization.

159439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22784.

The product of its digits is 4860, while the sum is 31.

The square root of 159439 is about 399.2981342306. The cubic root of 159439 is about 54.2248285187.

The spelling of 159439 in words is "one hundred fifty-nine thousand, four hundred thirty-nine".