13129393 has 2 divisors, whose sum is σ = 13129394. Its totient is φ = 13129392.

The previous prime is 13129381. The next prime is 13129397. The reversal of 13129393 is 39392131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8254129 + 4875264 = 2873^2 + 2208^2 .

It is an emirp because it is prime and its reverse (39392131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13129393 is a prime.

It is not a weakly prime, because it can be changed into another prime (13129397) 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, 6564696 + 6564697.

It is an arithmetic number, because the mean of its divisors is an integer number (6564697).

Almost surely, 2^13129393 is an apocalyptic number.

It is an amenable number.

13129393 is a deficient number, since it is larger than the sum of its proper divisors (1).

13129393 is an equidigital number, since it uses as much as digits as its factorization.

13129393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 31.

The square root of 13129393 is about 3623.4504274241. The cubic root of 13129393 is about 235.9110133242.

The spelling of 13129393 in words is "thirteen million, one hundred twenty-nine thousand, three hundred ninety-three".