13447843 has 2 divisors, whose sum is σ = 13447844. Its totient is φ = 13447842.

The previous prime is 13447829. The next prime is 13447853. The reversal of 13447843 is 34874431.

13447843 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 is an emirp because it is prime and its reverse (34874431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13447843 - 2⁹ = 13447331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13447799 and 13447808.

It is not a weakly prime, because it can be changed into another prime (13447853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6723921 + 6723922.

It is an arithmetic number, because the mean of its divisors is an integer number (6723922).

Almost surely, 2^13447843 is an apocalyptic number.

13447843 is a deficient number, since it is larger than the sum of its proper divisors (1).

13447843 is an equidigital number, since it uses as much as digits as its factorization.

13447843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

The square root of 13447843 is about 3667.1300767767. The cubic root of 13447843 is about 237.8031173116.

The spelling of 13447843 in words is "thirteen million, four hundred forty-seven thousand, eight hundred forty-three".