4444444817 has 2 divisors, whose sum is σ = 4444444818. Its totient is φ = 4444444816.

The previous prime is 4444444787. The next prime is 4444444871. The reversal of 4444444817 is 7184444444.

It is a happy number.

Together with next prime (4444444871) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4433429056 + 11015761 = 66584^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444444817 - 2²⁰ = 4443396241 is a prime.

It is not a weakly prime, because it can be changed into another prime (4444444877) 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, 2222222408 + 2222222409.

It is an arithmetic number, because the mean of its divisors is an integer number (2222222409).

Almost surely, 2^4444444817 is an apocalyptic number.

It is an amenable number.

4444444817 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444444817 is an equidigital number, since it uses as much as digits as its factorization.

4444444817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 917504, while the sum is 44.

The square root of 4444444817 is about 66666.6694608333. The cubic root of 4444444817 is about 1644.1414288270.

The spelling of 4444444817 in words is "four billion, four hundred forty-four million, four hundred forty-four thousand, eight hundred seventeen".