6446444243 has 2 divisors, whose sum is σ = 6446444244. Its totient is φ = 6446444242.

The previous prime is 6446444197. The next prime is 6446444269. The reversal of 6446444243 is 3424446446.

6446444243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6446444243 - 2¹⁰ = 6446443219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6446444243.

It is not a weakly prime, because it can be changed into another prime (6446444743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3223222121 + 3223222122.

It is an arithmetic number, because the mean of its divisors is an integer number (3223222122).

Almost surely, 2^6446444243 is an apocalyptic number.

6446444243 is a deficient number, since it is larger than the sum of its proper divisors (1).

6446444243 is an equidigital number, since it uses as much as digits as its factorization.

6446444243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 884736, while the sum is 41.

The square root of 6446444243 is about 80289.7517931149. The cubic root of 6446444243 is about 1861.1158605718.

The spelling of 6446444243 in words is "six billion, four hundred forty-six million, four hundred forty-four thousand, two hundred forty-three".