2066446439 has 2 divisors, whose sum is σ = 2066446440. Its totient is φ = 2066446438.

The previous prime is 2066446397. The next prime is 2066446469. The reversal of 2066446439 is 9346446602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2066446439 - 2¹⁶ = 2066380903 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2066446439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066446469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033223219 + 1033223220.

It is an arithmetic number, because the mean of its divisors is an integer number (1033223220).

Almost surely, 2^2066446439 is an apocalyptic number.

2066446439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066446439 is an equidigital number, since it uses as much as digits as its factorization.

2066446439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 44.

The square root of 2066446439 is about 45458.1834106908. The cubic root of 2066446439 is about 1273.7221982752.

The spelling of 2066446439 in words is "two billion, sixty-six million, four hundred forty-six thousand, four hundred thirty-nine".