13717391 has 2 divisors, whose sum is σ = 13717392. Its totient is φ = 13717390.

The previous prime is 13717369. The next prime is 13717423. The reversal of 13717391 is 19371731.

It is an a-pointer prime, because the next prime (13717423) can be obtained adding 13717391 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (19371731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13717391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13717331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6858695 + 6858696.

It is an arithmetic number, because the mean of its divisors is an integer number (6858696).

Almost surely, 2^13717391 is an apocalyptic number.

13717391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13717391 is an equidigital number, since it uses as much as digits as its factorization.

13717391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969, while the sum is 32.

The square root of 13717391 is about 3703.6996368496. The cubic root of 13717391 is about 239.3814569903.

The spelling of 13717391 in words is "thirteen million, seven hundred seventeen thousand, three hundred ninety-one".