12839971 has 2 divisors, whose sum is σ = 12839972. Its totient is φ = 12839970.

The previous prime is 12839963. The next prime is 12839989. The reversal of 12839971 is 17993821.

12839971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12839971 - 2³ = 12839963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12839371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419985 + 6419986.

It is an arithmetic number, because the mean of its divisors is an integer number (6419986).

Almost surely, 2^12839971 is an apocalyptic number.

12839971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12839971 is an equidigital number, since it uses as much as digits as its factorization.

12839971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 40.

The square root of 12839971 is about 3583.2905268761. The cubic root of 12839971 is about 234.1646575282.

The spelling of 12839971 in words is "twelve million, eight hundred thirty-nine thousand, nine hundred seventy-one".