4444558889 has 2 divisors, whose sum is σ = 4444558890. Its totient is φ = 4444558888.

The previous prime is 4444558861. The next prime is 4444558969. The reversal of 4444558889 is 9888554444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2621952025 + 1822606864 = 51205^2 + 42692^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444558889 - 2⁸ = 4444558633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (4444558849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222279444 + 2222279445.

It is an arithmetic number, because the mean of its divisors is an integer number (2222279445).

Almost surely, 2^4444558889 is an apocalyptic number.

It is an amenable number.

4444558889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444558889 is an equidigital number, since it uses as much as digits as its factorization.

4444558889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29491200, while the sum is 59.

The square root of 4444558889 is about 66667.5249953079. The cubic root of 4444558889 is about 1644.1554949931.

The spelling of 4444558889 in words is "four billion, four hundred forty-four million, five hundred fifty-eight thousand, eight hundred eighty-nine".