443630609 has 2 divisors, whose sum is σ = 443630610. Its totient is φ = 443630608.

The previous prime is 443630597. The next prime is 443630611. The reversal of 443630609 is 906036344.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393149584 + 50481025 = 19828^2 + 7105^2 .

It is a cyclic number.

It is not a de Polignac number, because 443630609 - 2⁸ = 443630353 is a prime.

Together with 443630611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (443630669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221815304 + 221815305.

It is an arithmetic number, because the mean of its divisors is an integer number (221815305).

Almost surely, 2^443630609 is an apocalyptic number.

It is an amenable number.

443630609 is a deficient number, since it is larger than the sum of its proper divisors (1).

443630609 is an equidigital number, since it uses as much as digits as its factorization.

443630609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 443630609 is about 21062.5404213262. The cubic root of 443630609 is about 762.6767392510.

The spelling of 443630609 in words is "four hundred forty-three million, six hundred thirty thousand, six hundred nine".