13678289 has 2 divisors, whose sum is σ = 13678290. Its totient is φ = 13678288.

The previous prime is 13678279. The next prime is 13678333. The reversal of 13678289 is 98287631.

13678289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (13678333) can be obtained adding 13678289 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 4068289 = 3100^2 + 2017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13678289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13678219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6839144 + 6839145.

It is an arithmetic number, because the mean of its divisors is an integer number (6839145).

Almost surely, 2^13678289 is an apocalyptic number.

It is an amenable number.

13678289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13678289 is an equidigital number, since it uses as much as digits as its factorization.

13678289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 13678289 is about 3698.4170938389. The cubic root of 13678289 is about 239.1537848863.

The spelling of 13678289 in words is "thirteen million, six hundred seventy-eight thousand, two hundred eighty-nine".