4423379221 has 2 divisors, whose sum is σ = 4423379222. Its totient is φ = 4423379220.

The previous prime is 4423379171. The next prime is 4423379231. The reversal of 4423379221 is 1229733244.

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., 4420787121 + 2592100 = 66489^2 + 1610^2 .

It is a cyclic number.

It is not a de Polignac number, because 4423379221 - 2¹¹ = 4423377173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4423379231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211689610 + 2211689611.

It is an arithmetic number, because the mean of its divisors is an integer number (2211689611).

Almost surely, 2^4423379221 is an apocalyptic number.

It is an amenable number.

4423379221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423379221 is an equidigital number, since it uses as much as digits as its factorization.

4423379221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 4423379221 is about 66508.4898415232. The cubic root of 4423379221 is about 1641.5397027540.

The spelling of 4423379221 in words is "four billion, four hundred twenty-three million, three hundred seventy-nine thousand, two hundred twenty-one".