12739049 has 2 divisors, whose sum is σ = 12739050. Its totient is φ = 12739048.

The previous prime is 12739043. The next prime is 12739081. The reversal of 12739049 is 94093721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10679824 + 2059225 = 3268^2 + 1435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12739049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12739043) 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, 6369524 + 6369525.

It is an arithmetic number, because the mean of its divisors is an integer number (6369525).

Almost surely, 2^12739049 is an apocalyptic number.

It is an amenable number.

12739049 is a deficient number, since it is larger than the sum of its proper divisors (1).

12739049 is an equidigital number, since it uses as much as digits as its factorization.

12739049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 12739049 is about 3569.1804381398. The cubic root of 12739049 is about 233.5495327211.

The spelling of 12739049 in words is "twelve million, seven hundred thirty-nine thousand, forty-nine".