4409843689 has 2 divisors, whose sum is σ = 4409843690. Its totient is φ = 4409843688.

The previous prime is 4409843681. The next prime is 4409843693. The reversal of 4409843689 is 9863489044.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4407897664 + 1946025 = 66392^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 4409843689 - 2³ = 4409843681 is a prime.

It is a super-2 number, since 2×4409843689² = 38893442722826257442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4409843681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2204921844 + 2204921845.

It is an arithmetic number, because the mean of its divisors is an integer number (2204921845).

Almost surely, 2^4409843689 is an apocalyptic number.

It is an amenable number.

4409843689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4409843689 is an equidigital number, since it uses as much as digits as its factorization.

4409843689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The square root of 4409843689 is about 66406.6539512420. The cubic root of 4409843689 is about 1639.8636225333.

The spelling of 4409843689 in words is "four billion, four hundred nine million, eight hundred forty-three thousand, six hundred eighty-nine".