4444217993 has 2 divisors, whose sum is σ = 4444217994. Its totient is φ = 4444217992.

The previous prime is 4444217977. The next prime is 4444218007. The reversal of 4444217993 is 3997124444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3783111049 + 661106944 = 61507^2 + 25712^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444217993 - 2⁴ = 4444217977 is a prime.

It is a super-3 number, since 3×4444217993³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (4444217903) 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, 2222108996 + 2222108997.

It is an arithmetic number, because the mean of its divisors is an integer number (2222108997).

Almost surely, 2^4444217993 is an apocalyptic number.

It is an amenable number.

4444217993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444217993 is an equidigital number, since it uses as much as digits as its factorization.

4444217993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 4444217993 is about 66664.9682591989. The cubic root of 4444217993 is about 1644.1134585484.

The spelling of 4444217993 in words is "four billion, four hundred forty-four million, two hundred seventeen thousand, nine hundred ninety-three".