12571439 has 2 divisors, whose sum is σ = 12571440. Its totient is φ = 12571438.

The previous prime is 12571421. The next prime is 12571457. The reversal of 12571439 is 93417521.

It is a balanced prime because it is at equal distance from previous prime (12571421) and next prime (12571457).

It is a cyclic number.

It is not a de Polignac number, because 12571439 - 2⁸ = 12571183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12571469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285719 + 6285720.

It is an arithmetic number, because the mean of its divisors is an integer number (6285720).

Almost surely, 2^12571439 is an apocalyptic number.

12571439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12571439 is an equidigital number, since it uses as much as digits as its factorization.

12571439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 12571439 is about 3545.6225123383. The cubic root of 12571439 is about 232.5207227068.

The spelling of 12571439 in words is "twelve million, five hundred seventy-one thousand, four hundred thirty-nine".