6446226439 has 2 divisors, whose sum is σ = 6446226440. Its totient is φ = 6446226438.

The previous prime is 6446226433. The next prime is 6446226499. The reversal of 6446226439 is 9346226446.

6446226439 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6446226439 - 2³ = 6446226431 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6446226431) 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, 3223113219 + 3223113220.

It is an arithmetic number, because the mean of its divisors is an integer number (3223113220).

Almost surely, 2^6446226439 is an apocalyptic number.

6446226439 is a deficient number, since it is larger than the sum of its proper divisors (1).

6446226439 is an equidigital number, since it uses as much as digits as its factorization.

6446226439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 46.

The square root of 6446226439 is about 80288.3954192634. The cubic root of 6446226439 is about 1861.0949000221.

The spelling of 6446226439 in words is "six billion, four hundred forty-six million, two hundred twenty-six thousand, four hundred thirty-nine".