445120609 has 2 divisors, whose sum is σ = 445120610. Its totient is φ = 445120608.

The previous prime is 445120589. The next prime is 445120667. The reversal of 445120609 is 906021544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274896400 + 170224209 = 16580^2 + 13047^2 .

It is a cyclic number.

It is not a de Polignac number, because 445120609 - 2⁹ = 445120097 is a prime.

It is not a weakly prime, because it can be changed into another prime (445120309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222560304 + 222560305.

It is an arithmetic number, because the mean of its divisors is an integer number (222560305).

Almost surely, 2^445120609 is an apocalyptic number.

It is an amenable number.

445120609 is a deficient number, since it is larger than the sum of its proper divisors (1).

445120609 is an equidigital number, since it uses as much as digits as its factorization.

445120609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 445120609 is about 21097.8816235185. The cubic root of 445120609 is about 763.5296398725.

The spelling of 445120609 in words is "four hundred forty-five million, one hundred twenty thousand, six hundred nine".