13940189 has 2 divisors, whose sum is σ = 13940190. Its totient is φ = 13940188.

The previous prime is 13940183. The next prime is 13940191. The reversal of 13940189 is 98104931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13935289 + 4900 = 3733^2 + 70^2 .

It is an emirp because it is prime and its reverse (98104931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13940189 is a prime.

Together with 13940191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13940183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970094 + 6970095.

It is an arithmetic number, because the mean of its divisors is an integer number (6970095).

Almost surely, 2^13940189 is an apocalyptic number.

It is an amenable number.

13940189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13940189 is an equidigital number, since it uses as much as digits as its factorization.

13940189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13940189 is about 3733.6562509154. The cubic root of 13940189 is about 240.6705150085.

It can be divided in two parts, 13940 and 189, that multiplied together give a triangular number (2634660 = T₂₂₉₅).

The spelling of 13940189 in words is "thirteen million, nine hundred forty thousand, one hundred eighty-nine".