441040221 has 10 divisors (see below), whose sum is σ = 658837982. Its totient is φ = 294026760.

The previous prime is 441040219. The next prime is 441040247. The reversal of 441040221 is 122040144.

441040221 is a `hidden beast` number, since 441 + 0 + 4 + 0 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 256352121 + 184688100 = 16011^2 + 13590^2 .

It is not a de Polignac number, because 441040221 - 2¹ = 441040219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441040194 and 441040203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441040211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2722390 + ... + 2722551.

Almost surely, 2^441040221 is an apocalyptic number.

It is an amenable number.

441040221 is a deficient number, since it is larger than the sum of its proper divisors (217797761).

441040221 is an equidigital number, since it uses as much as digits as its factorization.

441040221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444953 (or 5444944 counting only the distinct ones).

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

The square root of 441040221 is about 21000.9576210229. The cubic root of 441040221 is about 761.1894008885.

Adding to 441040221 its reverse (122040144), we get a palindrome (563080365).

The spelling of 441040221 in words is "four hundred forty-one million, forty thousand, two hundred twenty-one".