12799139 has 2 divisors, whose sum is σ = 12799140. Its totient is φ = 12799138.

The previous prime is 12799133. The next prime is 12799159. The reversal of 12799139 is 93199721.

It is a weak prime.

It is an emirp because it is prime and its reverse (93199721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12799139 - 2⁴ = 12799123 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12799096 and 12799105.

It is not a weakly prime, because it can be changed into another prime (12799133) 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, 6399569 + 6399570.

It is an arithmetic number, because the mean of its divisors is an integer number (6399570).

Almost surely, 2^12799139 is an apocalyptic number.

12799139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12799139 is an equidigital number, since it uses as much as digits as its factorization.

12799139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 41.

The square root of 12799139 is about 3577.5884335681. The cubic root of 12799139 is about 233.9161739826.

The spelling of 12799139 in words is "twelve million, seven hundred ninety-nine thousand, one hundred thirty-nine".