13129747 has 2 divisors, whose sum is σ = 13129748. Its totient is φ = 13129746.

The previous prime is 13129693. The next prime is 13129751. The reversal of 13129747 is 74792131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13129747 is a prime.

It is not a weakly prime, because it can be changed into another prime (13124747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564873 + 6564874.

It is an arithmetic number, because the mean of its divisors is an integer number (6564874).

Almost surely, 2^13129747 is an apocalyptic number.

13129747 is a deficient number, since it is larger than the sum of its proper divisors (1).

13129747 is an equidigital number, since it uses as much as digits as its factorization.

13129747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 13129747 is about 3623.4992755622. The cubic root of 13129747 is about 235.9131335478.

The spelling of 13129747 in words is "thirteen million, one hundred twenty-nine thousand, seven hundred forty-seven".