441626221 has 4 divisors (see below), whose sum is σ = 467604252. Its totient is φ = 415648192.

The previous prime is 441626203. The next prime is 441626231. The reversal of 441626221 is 122626144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 340402500 + 101223721 = 18450^2 + 10061^2 .

It is a cyclic number.

It is not a de Polignac number, because 441626221 - 2¹³ = 441618029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 441626221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441626201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12988990 + ... + 12989023.

It is an arithmetic number, because the mean of its divisors is an integer number (116901063).

Almost surely, 2^441626221 is an apocalyptic number.

It is an amenable number.

441626221 is a deficient number, since it is larger than the sum of its proper divisors (25978031).

441626221 is a wasteful number, since it uses less digits than its factorization.

441626221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25978030.

The product of its digits is 4608, while the sum is 28.

The square root of 441626221 is about 21014.9047344974. The cubic root of 441626221 is about 761.5263766397.

The spelling of 441626221 in words is "four hundred forty-one million, six hundred twenty-six thousand, two hundred twenty-one".