13784117 has 2 divisors, whose sum is σ = 13784118. Its totient is φ = 13784116.

The previous prime is 13784087. The next prime is 13784131. The reversal of 13784117 is 71148731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8726116 + 5058001 = 2954^2 + 2249^2 .

It is an emirp because it is prime and its reverse (71148731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13784117 - 2¹⁶ = 13718581 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13784137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6892058 + 6892059.

It is an arithmetic number, because the mean of its divisors is an integer number (6892059).

Almost surely, 2^13784117 is an apocalyptic number.

It is an amenable number.

13784117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13784117 is an equidigital number, since it uses as much as digits as its factorization.

13784117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 32.

The square root of 13784117 is about 3712.6967287943. The cubic root of 13784117 is about 239.7689732843.

The spelling of 13784117 in words is "thirteen million, seven hundred eighty-four thousand, one hundred seventeen".