441304021 has 4 divisors (see below), whose sum is σ = 442714252. Its totient is φ = 439893792.

The previous prime is 441304007. The next prime is 441304043. The reversal of 441304021 is 120403144.

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 91202500 + 350101521 = 9550^2 + 18711^2 .

It is a cyclic number.

It is not a de Polignac number, because 441304021 - 2¹⁹ = 440779733 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 441304021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441304421) 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, 704646 + ... + 705271.

It is an arithmetic number, because the mean of its divisors is an integer number (110678563).

Almost surely, 2^441304021 is an apocalyptic number.

It is an amenable number.

441304021 is a deficient number, since it is larger than the sum of its proper divisors (1410231).

441304021 is a wasteful number, since it uses less digits than its factorization.

441304021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410230.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 441304021 is about 21007.2373481141. The cubic root of 441304021 is about 761.3411343982.

Adding to 441304021 its reverse (120403144), we get a palindrome (561707165).

The spelling of 441304021 in words is "four hundred forty-one million, three hundred four thousand, twenty-one".