12739271 has 2 divisors, whose sum is σ = 12739272. Its totient is φ = 12739270.

The previous prime is 12739267. The next prime is 12739289. The reversal of 12739271 is 17293721.

It is a weak prime.

It is an emirp because it is prime and its reverse (17293721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12739271 - 2² = 12739267 is a prime.

It is a super-2 number, since 2×12739271² = 324578051222882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12739471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369635 + 6369636.

It is an arithmetic number, because the mean of its divisors is an integer number (6369636).

Almost surely, 2^12739271 is an apocalyptic number.

12739271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12739271 is an equidigital number, since it uses as much as digits as its factorization.

12739271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 12739271 is about 3569.2115375808. The cubic root of 12739271 is about 233.5508893816.

The spelling of 12739271 in words is "twelve million, seven hundred thirty-nine thousand, two hundred seventy-one".