13129379 has 2 divisors, whose sum is σ = 13129380. Its totient is φ = 13129378.

The previous prime is 13129367. The next prime is 13129381. The reversal of 13129379 is 97392131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13129379 is a prime.

Together with 13129381, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₅₇₀₇₈ and since 13129379 and 857078 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13129349) 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, 6564689 + 6564690.

It is an arithmetic number, because the mean of its divisors is an integer number (6564690).

Almost surely, 2^13129379 is an apocalyptic number.

13129379 is a deficient number, since it is larger than the sum of its proper divisors (1).

13129379 is an equidigital number, since it uses as much as digits as its factorization.

13129379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 13129379 is about 3623.4484955633. The cubic root of 13129379 is about 235.9109294728.

The spelling of 13129379 in words is "thirteen million, one hundred twenty-nine thousand, three hundred seventy-nine".