13399706849 has 2 divisors, whose sum is σ = 13399706850. Its totient is φ = 13399706848.

The previous prime is 13399706819. The next prime is 13399706857. The reversal of 13399706849 is 94860799331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9816846400 + 3582860449 = 99080^2 + 59857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13399706849 is a prime.

It is not a weakly prime, because it can be changed into another prime (13399706819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6699853424 + 6699853425.

It is an arithmetic number, because the mean of its divisors is an integer number (6699853425).

Almost surely, 2^13399706849 is an apocalyptic number.

It is an amenable number.

13399706849 is a deficient number, since it is larger than the sum of its proper divisors (1).

13399706849 is an equidigital number, since it uses as much as digits as its factorization.

13399706849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 13399706849 in words is "thirteen billion, three hundred ninety-nine million, seven hundred six thousand, eight hundred forty-nine".