4473644321 has 2 divisors, whose sum is σ = 4473644322. Its totient is φ = 4473644320.

The previous prime is 4473644309. The next prime is 4473644323. The reversal of 4473644321 is 1234463744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3290284321 + 1183360000 = 57361^2 + 34400^2 .

It is a cyclic number.

It is not a de Polignac number, because 4473644321 - 2¹⁰ = 4473643297 is a prime.

Together with 4473644323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4473644323) 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, 2236822160 + 2236822161.

It is an arithmetic number, because the mean of its divisors is an integer number (2236822161).

Almost surely, 2^4473644321 is an apocalyptic number.

It is an amenable number.

4473644321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4473644321 is an equidigital number, since it uses as much as digits as its factorization.

4473644321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 38.

The square root of 4473644321 is about 66885.3072131690. The cubic root of 4473644321 is about 1647.7341805498.

The spelling of 4473644321 in words is "four billion, four hundred seventy-three million, six hundred forty-four thousand, three hundred twenty-one".