440003221 has 4 divisors (see below), whose sum is σ = 502860832. Its totient is φ = 377145612.

The previous prime is 440003203. The next prime is 440003227. The reversal of 440003221 is 122300044.

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 440003221 - 2⁷ = 440003093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440003195 and 440003204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440003227) 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, 31428795 + ... + 31428808.

It is an arithmetic number, because the mean of its divisors is an integer number (125715208).

Almost surely, 2^440003221 is an apocalyptic number.

It is an amenable number.

440003221 is a deficient number, since it is larger than the sum of its proper divisors (62857611).

440003221 is an equidigital number, since it uses as much as digits as its factorization.

440003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62857610.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 440003221 is about 20976.2537408375. The cubic root of 440003221 is about 760.5923481038.

Adding to 440003221 its reverse (122300044), we get a palindrome (562303265).

The spelling of 440003221 in words is "four hundred forty million, three thousand, two hundred twenty-one".