12285439 has 2 divisors, whose sum is σ = 12285440. Its totient is φ = 12285438.

The previous prime is 12285421. The next prime is 12285451. The reversal of 12285439 is 93458221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12285439 - 2¹⁵ = 12252671 is a prime.

It is a super-2 number, since 2×12285439² = 301864022845442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12285479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6142719 + 6142720.

It is an arithmetic number, because the mean of its divisors is an integer number (6142720).

Almost surely, 2^12285439 is an apocalyptic number.

12285439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12285439 is an equidigital number, since it uses as much as digits as its factorization.

12285439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 12285439 is about 3505.0590579903. The cubic root of 12285439 is about 230.7438988804.

The spelling of 12285439 in words is "twelve million, two hundred eighty-five thousand, four hundred thirty-nine".