13989193 has 2 divisors, whose sum is σ = 13989194. Its totient is φ = 13989192.

The previous prime is 13989179. The next prime is 13989229. The reversal of 13989193 is 39198931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10291264 + 3697929 = 3208^2 + 1923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13989193 is a prime.

It is not a weakly prime, because it can be changed into another prime (13989133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6994596 + 6994597.

It is an arithmetic number, because the mean of its divisors is an integer number (6994597).

Almost surely, 2^13989193 is an apocalyptic number.

It is an amenable number.

13989193 is a deficient number, since it is larger than the sum of its proper divisors (1).

13989193 is an equidigital number, since it uses as much as digits as its factorization.

13989193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 43.

The square root of 13989193 is about 3740.2129618512. The cubic root of 13989193 is about 240.9521951977.

The spelling of 13989193 in words is "thirteen million, nine hundred eighty-nine thousand, one hundred ninety-three".