12306439 has 2 divisors, whose sum is σ = 12306440. Its totient is φ = 12306438.

The previous prime is 12306431. The next prime is 12306443. The reversal of 12306439 is 93460321.

12306439 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 an emirp because it is prime and its reverse (93460321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12306439 - 2³ = 12306431 is a prime.

It is equal to p₈₀₆₈₃₃ and since 12306439 and 806833 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12306431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6153219 + 6153220.

It is an arithmetic number, because the mean of its divisors is an integer number (6153220).

Almost surely, 2^12306439 is an apocalyptic number.

12306439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12306439 is an equidigital number, since it uses as much as digits as its factorization.

12306439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 12306439 is about 3508.0534488517. The cubic root of 12306439 is about 230.8752973474.

The spelling of 12306439 in words is "twelve million, three hundred six thousand, four hundred thirty-nine".