13729811 has 2 divisors, whose sum is σ = 13729812. Its totient is φ = 13729810.

The previous prime is 13729801. The next prime is 13729817. The reversal of 13729811 is 11892731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13729811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13729817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6864905 + 6864906.

It is an arithmetic number, because the mean of its divisors is an integer number (6864906).

Almost surely, 2^13729811 is an apocalyptic number.

13729811 is a deficient number, since it is larger than the sum of its proper divisors (1).

13729811 is an equidigital number, since it uses as much as digits as its factorization.

13729811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 13729811 is about 3705.3759593326. The cubic root of 13729811 is about 239.4536821153.

The spelling of 13729811 in words is "thirteen million, seven hundred twenty-nine thousand, eight hundred eleven".