4423281329 has 2 divisors, whose sum is σ = 4423281330. Its totient is φ = 4423281328.

The previous prime is 4423281319. The next prime is 4423281353. The reversal of 4423281329 is 9231823244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3022800400 + 1400480929 = 54980^2 + 37423^2 .

It is a cyclic number.

It is not a de Polignac number, because 4423281329 - 2²⁰ = 4422232753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4423281292 and 4423281301.

It is not a weakly prime, because it can be changed into another prime (4423281319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211640664 + 2211640665.

It is an arithmetic number, because the mean of its divisors is an integer number (2211640665).

Almost surely, 2^4423281329 is an apocalyptic number.

It is an amenable number.

4423281329 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423281329 is an equidigital number, since it uses as much as digits as its factorization.

4423281329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 4423281329 is about 66507.7539013309. The cubic root of 4423281329 is about 1641.5275932497.

The spelling of 4423281329 in words is "four billion, four hundred twenty-three million, two hundred eighty-one thousand, three hundred twenty-nine".