4466221 has 2 divisors, whose sum is σ = 4466222. Its totient is φ = 4466220.

The previous prime is 4466219. The next prime is 4466227. The reversal of 4466221 is 1226644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 741321 = 1930^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 4466221 - 2¹ = 4466219 is a prime.

Together with 4466219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4466227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2233110 + 2233111.

It is an arithmetic number, because the mean of its divisors is an integer number (2233111).

Almost surely, 2^4466221 is an apocalyptic number.

It is an amenable number.

4466221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4466221 is an equidigital number, since it uses as much as digits as its factorization.

4466221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 4466221 is about 2113.3435593864. The cubic root of 4466221 is about 164.6822289287.

The spelling of 4466221 in words is "four million, four hundred sixty-six thousand, two hundred twenty-one".