158839 has 4 divisors (see below), whose sum is σ = 159856. Its totient is φ = 157824.

The previous prime is 158803. The next prime is 158843. The reversal of 158839 is 938851.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 938851 = 61 ⋅15391.

It is a cyclic number.

It is not a de Polignac number, because 158839 - 2¹⁷ = 27767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158849) 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, 219 + ... + 604.

It is an arithmetic number, because the mean of its divisors is an integer number (39964).

2¹⁵⁸⁸³⁹ is an apocalyptic number.

158839 is a deficient number, since it is larger than the sum of its proper divisors (1017).

158839 is an equidigital number, since it uses as much as digits as its factorization.

158839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its digits is 8640, while the sum is 34.

The square root of 158839 is about 398.5461077466. The cubic root of 158839 is about 54.1567234872.

The spelling of 158839 in words is "one hundred fifty-eight thousand, eight hundred thirty-nine".