13906713749 has 2 divisors, whose sum is σ = 13906713750. Its totient is φ = 13906713748.

The previous prime is 13906713731. The next prime is 13906713763. The reversal of 13906713749 is 94731760931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10564139524 + 3342574225 = 102782^2 + 57815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13906713749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13906713697 and 13906713706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13906793749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6953356874 + 6953356875.

It is an arithmetic number, because the mean of its divisors is an integer number (6953356875).

Almost surely, 2^13906713749 is an apocalyptic number.

It is an amenable number.

13906713749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13906713749 is an equidigital number, since it uses as much as digits as its factorization.

13906713749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 50.

The spelling of 13906713749 in words is "thirteen billion, nine hundred six million, seven hundred thirteen thousand, seven hundred forty-nine".