158939 has 4 divisors (see below), whose sum is σ = 173400. Its totient is φ = 144480.

The previous prime is 158927. The next prime is 158941. The reversal of 158939 is 939851.

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 158939 - 2⁴ = 158923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158899 and 158908.

It is not an unprimeable number, because it can be changed into a prime (158909) 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, 7214 + ... + 7235.

It is an arithmetic number, because the mean of its divisors is an integer number (43350).

2¹⁵⁸⁹³⁹ is an apocalyptic number.

158939 is a deficient number, since it is larger than the sum of its proper divisors (14461).

158939 is a wasteful number, since it uses less digits than its factorization.

158939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14460.

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

The square root of 158939 is about 398.6715440058. The cubic root of 158939 is about 54.1680862218.

The spelling of 158939 in words is "one hundred fifty-eight thousand, nine hundred thirty-nine".