441401221 has 4 divisors (see below), whose sum is σ = 446719392. Its totient is φ = 436083052.

The previous prime is 441401201. The next prime is 441401269. The reversal of 441401221 is 122104144.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 441401221 - 2¹⁷ = 441270149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441401201) 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 3 ways as a sum of consecutive naturals, for example, 2658961 + ... + 2659126.

It is an arithmetic number, because the mean of its divisors is an integer number (111679848).

Almost surely, 2^441401221 is an apocalyptic number.

It is an amenable number.

441401221 is a deficient number, since it is larger than the sum of its proper divisors (5318171).

441401221 is an equidigital number, since it uses as much as digits as its factorization.

441401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318170.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 441401221 is about 21009.5507091418. The cubic root of 441401221 is about 761.3970270272.

Adding to 441401221 its reverse (122104144), we get a palindrome (563505365).

The spelling of 441401221 in words is "four hundred forty-one million, four hundred one thousand, two hundred twenty-one".