4473843221 has 2 divisors, whose sum is σ = 4473843222. Its totient is φ = 4473843220.

The previous prime is 4473843217. The next prime is 4473843223. The reversal of 4473843221 is 1223483744.

It is a happy number.

4473843221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3328020721 + 1145822500 = 57689^2 + 33850^2 .

It is a cyclic number.

It is not a de Polignac number, because 4473843221 - 2² = 4473843217 is a prime.

It is a Sophie Germain prime.

Together with 4473843223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4473843223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2236921610 + 2236921611.

It is an arithmetic number, because the mean of its divisors is an integer number (2236921611).

Almost surely, 2^4473843221 is an apocalyptic number.

It is an amenable number.

4473843221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4473843221 is an equidigital number, since it uses as much as digits as its factorization.

4473843221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 38.

The square root of 4473843221 is about 66886.7940702797. The cubic root of 4473843221 is about 1647.7585998262.

The spelling of 4473843221 in words is "four billion, four hundred seventy-three million, eight hundred forty-three thousand, two hundred twenty-one".