445849709 has 2 divisors, whose sum is σ = 445849710. Its totient is φ = 445849708.

The previous prime is 445849681. The next prime is 445849739. The reversal of 445849709 is 907948544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392238025 + 53611684 = 19805^2 + 7322^2 .

It is a cyclic number.

It is not a de Polignac number, because 445849709 - 2¹⁶ = 445784173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445849739) 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, 222924854 + 222924855.

It is an arithmetic number, because the mean of its divisors is an integer number (222924855).

Almost surely, 2^445849709 is an apocalyptic number.

It is an amenable number.

445849709 is a deficient number, since it is larger than the sum of its proper divisors (1).

445849709 is an equidigital number, since it uses as much as digits as its factorization.

445849709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 445849709 is about 21115.1535395791. The cubic root of 445849709 is about 763.9462953259.

The spelling of 445849709 in words is "four hundred forty-five million, eight hundred forty-nine thousand, seven hundred nine".