13243849 has 2 divisors, whose sum is σ = 13243850. Its totient is φ = 13243848.

The previous prime is 13243847. The next prime is 13243859. The reversal of 13243849 is 94834231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7118224 + 6125625 = 2668^2 + 2475^2 .

It is an emirp because it is prime and its reverse (94834231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13243849 - 2¹ = 13243847 is a prime.

Together with 13243847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13243847) 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, 6621924 + 6621925.

It is an arithmetic number, because the mean of its divisors is an integer number (6621925).

Almost surely, 2^13243849 is an apocalyptic number.

It is an amenable number.

13243849 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243849 is an equidigital number, since it uses as much as digits as its factorization.

13243849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 13243849 is about 3639.2099417319. The cubic root of 13243849 is about 236.5945520766.

The spelling of 13243849 in words is "thirteen million, two hundred forty-three thousand, eight hundred forty-nine".