4444446689 has 2 divisors, whose sum is σ = 4444446690. Its totient is φ = 4444446688.

The previous prime is 4444446683. The next prime is 4444446739. The reversal of 4444446689 is 9866444444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4305984400 + 138462289 = 65620^2 + 11767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4444446689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 4444446689.

It is not a weakly prime, because it can be changed into another prime (4444446683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222223344 + 2222223345.

It is an arithmetic number, because the mean of its divisors is an integer number (2222223345).

Almost surely, 2^4444446689 is an apocalyptic number.

It is an amenable number.

4444446689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444446689 is an equidigital number, since it uses as much as digits as its factorization.

4444446689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10616832, while the sum is 53.

The square root of 4444446689 is about 66666.6835008312. The cubic root of 4444446689 is about 1644.1416596644.

The spelling of 4444446689 in words is "four billion, four hundred forty-four million, four hundred forty-six thousand, six hundred eighty-nine".