12012439 has 2 divisors, whose sum is σ = 12012440. Its totient is φ = 12012438.

The previous prime is 12012433. The next prime is 12012443. The reversal of 12012439 is 93421021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12012439 - 2¹¹ = 12010391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006219 + 6006220.

It is an arithmetic number, because the mean of its divisors is an integer number (6006220).

Almost surely, 2^12012439 is an apocalyptic number.

12012439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012439 is an equidigital number, since it uses as much as digits as its factorization.

12012439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12012439 is about 3465.8965651040. The cubic root of 12012439 is about 229.0219273067.

The spelling of 12012439 in words is "twelve million, twelve thousand, four hundred thirty-nine".