4494221 has 2 divisors, whose sum is σ = 4494222. Its totient is φ = 4494220.

The previous prime is 4494211. The next prime is 4494227. The reversal of 4494221 is 1224944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 373321 = 2030^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 4494221 - 2⁶ = 4494157 is a prime.

It is a Sophie Germain prime.

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 (4494227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2247110 + 2247111.

It is an arithmetic number, because the mean of its divisors is an integer number (2247111).

Almost surely, 2^4494221 is an apocalyptic number.

It is an amenable number.

4494221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4494221 is an equidigital number, since it uses as much as digits as its factorization.

4494221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 4494221 is about 2119.9577825985. The cubic root of 4494221 is about 165.0256586972.

The spelling of 4494221 in words is "four million, four hundred ninety-four thousand, two hundred twenty-one".