13906393 has 2 divisors, whose sum is σ = 13906394. Its totient is φ = 13906392.

The previous prime is 13906349. The next prime is 13906397. The reversal of 13906393 is 39360931.

It is a happy number.

13906393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13778944 + 127449 = 3712^2 + 357^2 .

It is an emirp because it is prime and its reverse (39360931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13906393 is a prime.

It is not a weakly prime, because it can be changed into another prime (13906397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6953196 + 6953197.

It is an arithmetic number, because the mean of its divisors is an integer number (6953197).

Almost surely, 2^13906393 is an apocalyptic number.

It is an amenable number.

13906393 is a deficient number, since it is larger than the sum of its proper divisors (1).

13906393 is an equidigital number, since it uses as much as digits as its factorization.

13906393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 13906393 is about 3729.1276459783. The cubic root of 13906393 is about 240.4758671791.

The spelling of 13906393 in words is "thirteen million, nine hundred six thousand, three hundred ninety-three".