12239 has 2 divisors, whose sum is σ = 12240.
Its totient is φ = 12238.
The previous prime is 12227. The next prime is 12241. The reversal of 12239 is 93221.
It can be divided in two parts, 122 and 39, that added together give a palindrome (161).
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12239 is a prime.
Together with 12241, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12269) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6119 + 6120.
It is an arithmetic number, because the mean of its divisors is an integer number (6120).
212239 is an apocalyptic number.
12239 is a deficient number, since it is larger than the sum of its proper divisors (1).
12239 is an equidigital number, since it uses as much as digits as its factorization.
12239 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 108, while the sum is 17.
The square root of 12239 is about 110.6300140107.
The cubic root of 12239 is about 23.0452794213.
The spelling of 12239 in words is "twelve thousand, two hundred thirty-nine".