13919743 has 2 divisors, whose sum is σ = 13919744. Its totient is φ = 13919742.

The previous prime is 13919701. The next prime is 13919747. The reversal of 13919743 is 34791931.

It is a strong prime.

It is an emirp because it is prime and its reverse (34791931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13919743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13919747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6959871 + 6959872.

It is an arithmetic number, because the mean of its divisors is an integer number (6959872).

Almost surely, 2^13919743 is an apocalyptic number.

13919743 is a deficient number, since it is larger than the sum of its proper divisors (1).

13919743 is an equidigital number, since it uses as much as digits as its factorization.

13919743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 13919743 is about 3730.9171794614. The cubic root of 13919743 is about 240.5527940542.

The spelling of 13919743 in words is "thirteen million, nine hundred nineteen thousand, seven hundred forty-three".