1044430221 has 4 divisors (see below), whose sum is σ = 1392573632. Its totient is φ = 696286812.

The previous prime is 1044430181. The next prime is 1044430259. The reversal of 1044430221 is 1220344401.

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 not a de Polignac number, because 1044430221 - 2²⁷ = 910212493 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 (1044430291) 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, 174071701 + ... + 174071706.

It is an arithmetic number, because the mean of its divisors is an integer number (348143408).

Almost surely, 2^1044430221 is an apocalyptic number.

It is an amenable number.

1044430221 is a deficient number, since it is larger than the sum of its proper divisors (348143411).

1044430221 is an equidigital number, since it uses as much as digits as its factorization.

1044430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348143410.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1044430221 is about 32317.6456599177. The cubic root of 1044430221 is about 1014.5959940980.

Adding to 1044430221 its reverse (1220344401), we get a palindrome (2264774622).

The spelling of 1044430221 in words is "one billion, forty-four million, four hundred thirty thousand, two hundred twenty-one".