12844549 has 2 divisors, whose sum is σ = 12844550. Its totient is φ = 12844548.

The previous prime is 12844547. The next prime is 12844553. The reversal of 12844549 is 94544821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9042049 + 3802500 = 3007^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 12844549 - 2¹ = 12844547 is a prime.

Together with 12844547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12844547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6422274 + 6422275.

It is an arithmetic number, because the mean of its divisors is an integer number (6422275).

Almost surely, 2^12844549 is an apocalyptic number.

It is an amenable number.

12844549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12844549 is an equidigital number, since it uses as much as digits as its factorization.

12844549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 12844549 is about 3583.9292682753. The cubic root of 12844549 is about 234.1924841337.

It can be divided in two parts, 12 and 844549, that added together give a square (844561 = 919²).

The spelling of 12844549 in words is "twelve million, eight hundred forty-four thousand, five hundred forty-nine".