4440259081 has 2 divisors, whose sum is σ = 4440259082. Its totient is φ = 4440259080.

The previous prime is 4440259079. The next prime is 4440259129. The reversal of 4440259081 is 1809520444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2276148681 + 2164110400 = 47709^2 + 46520^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440259081 - 2¹ = 4440259079 is a prime.

It is a super-2 number, since 2×4440259081² = 39431801412805929122, which contains 22 as substring.

Together with 4440259079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4440259081.

It is not a weakly prime, because it can be changed into another prime (4440259781) 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, 2220129540 + 2220129541.

It is an arithmetic number, because the mean of its divisors is an integer number (2220129541).

Almost surely, 2^4440259081 is an apocalyptic number.

It is an amenable number.

4440259081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440259081 is an equidigital number, since it uses as much as digits as its factorization.

4440259081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 4440259081 is about 66635.2690472545. The cubic root of 4440259081 is about 1643.6251211042.

The spelling of 4440259081 in words is "four billion, four hundred forty million, two hundred fifty-nine thousand, eighty-one".