82239 has 8 divisors (see below), whose sum is σ = 111360. Its totient is φ = 53976.

The previous prime is 82237. The next prime is 82241. The reversal of 82239 is 93228.

It is an interprime number because it is at equal distance from previous prime (82237) and next prime (82241).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82239 - 2¹ = 82237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64 + ... + 410.

It is an arithmetic number, because the mean of its divisors is an integer number (13920).

2⁸²²³⁹ is an apocalyptic number.

82239 is a deficient number, since it is larger than the sum of its proper divisors (29121).

82239 is a wasteful number, since it uses less digits than its factorization.

82239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its digits is 864, while the sum is 24.

The square root of 82239 is about 286.7734297316. The cubic root of 82239 is about 43.4869824967.

Subtracting from 82239 its sum of digits (24), we obtain a triangular number (82215 = T₄₀₅).

It can be divided in two parts, 822 and 39, that added together give a triangular number (861 = T₄₁).

The spelling of 82239 in words is "eighty-two thousand, two hundred thirty-nine".