4441221 has 12 divisors (see below), whose sum is σ = 6588972. Its totient is φ = 2880576.

The previous prime is 4441219. The next prime is 4441237. The reversal of 4441221 is 1221444.

4441221 is a `hidden beast` number, since 4 + 441 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2722500 + 1718721 = 1650^2 + 1311^2 .

It is not a de Polignac number, because 4441221 - 2¹ = 4441219 is a prime.

4441221 is a modest number, since divided by 1221 gives 444 as remainder.

4441221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4441194 and 4441203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6336 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (549081).

Almost surely, 2^4441221 is an apocalyptic number.

It is an amenable number.

4441221 is a deficient number, since it is larger than the sum of its proper divisors (2147751).

4441221 is a wasteful number, since it uses less digits than its factorization.

4441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13380 (or 13377 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 4441221 is about 2107.4204611325. The cubic root of 4441221 is about 164.3743801872.

Adding to 4441221 its reverse (1221444), we get a palindrome (5662665).

The spelling of 4441221 in words is "four million, four hundred forty-one thousand, two hundred twenty-one".