239139 has 16 divisors (see below), whose sum is σ = 375840. Its totient is φ = 149760.

The previous prime is 239137. The next prime is 239147. The reversal of 239139 is 931932.

239139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 239139 - 2¹ = 239137 is a prime.

It is a super-2 number, since 2×239139² = 114374922642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (239137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (23490).

2²³⁹¹³⁹ is an apocalyptic number.

239139 is a deficient number, since it is larger than the sum of its proper divisors (136701).

239139 is a wasteful number, since it uses less digits than its factorization.

239139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 541 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 239139 is about 489.0184045616. The cubic root of 239139 is about 62.0702464295.

It can be divided in two parts, 239 and 139, that added together give a triangular number (378 = T₂₇).

The spelling of 239139 in words is "two hundred thirty-nine thousand, one hundred thirty-nine".