12739841 has 2 divisors, whose sum is σ = 12739842. Its totient is φ = 12739840.

The previous prime is 12739819. The next prime is 12739847. The reversal of 12739841 is 14893721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 802816 = 3455^2 + 896^2 .

It is a cyclic number.

It is not a de Polignac number, because 12739841 - 2¹⁴ = 12723457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12739847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369920 + 6369921.

It is an arithmetic number, because the mean of its divisors is an integer number (6369921).

Almost surely, 2^12739841 is an apocalyptic number.

It is an amenable number.

12739841 is a deficient number, since it is larger than the sum of its proper divisors (1).

12739841 is an equidigital number, since it uses as much as digits as its factorization.

12739841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 12739841 is about 3569.2913862558. The cubic root of 12739841 is about 233.5543726270.

The spelling of 12739841 in words is "twelve million, seven hundred thirty-nine thousand, eight hundred forty-one".