12339287 has 2 divisors, whose sum is σ = 12339288. Its totient is φ = 12339286.

The previous prime is 12339277. The next prime is 12339289. The reversal of 12339287 is 78293321.

12339287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12339287 - 2⁸ = 12339031 is a prime.

Together with 12339289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12339289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6169643 + 6169644.

It is an arithmetic number, because the mean of its divisors is an integer number (6169644).

Almost surely, 2^12339287 is an apocalyptic number.

12339287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12339287 is an equidigital number, since it uses as much as digits as its factorization.

12339287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 12339287 is about 3512.7321275611. The cubic root of 12339287 is about 231.0805301331.

The spelling of 12339287 in words is "twelve million, three hundred thirty-nine thousand, two hundred eighty-seven".