13729291 has 2 divisors, whose sum is σ = 13729292. Its totient is φ = 13729290.

The previous prime is 13729223. The next prime is 13729297. The reversal of 13729291 is 19292731.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19292731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13729291 - 2²¹ = 11632139 is a prime.

It is not a weakly prime, because it can be changed into another prime (13729297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6864645 + 6864646.

It is an arithmetic number, because the mean of its divisors is an integer number (6864646).

Almost surely, 2^13729291 is an apocalyptic number.

13729291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13729291 is an equidigital number, since it uses as much as digits as its factorization.

13729291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 13729291 is about 3705.3057903498. The cubic root of 13729291 is about 239.4506590709.

The spelling of 13729291 in words is "thirteen million, seven hundred twenty-nine thousand, two hundred ninety-one".