1044402321 has 4 divisors (see below), whose sum is σ = 1392536432. Its totient is φ = 696268212.

The previous prime is 1044402301. The next prime is 1044402397. The reversal of 1044402321 is 1232044401.

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 1044402321 - 2¹³ = 1044394129 is a prime.

It is a super-2 number, since 2×1044402321² = 2181552416220374082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044402301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174067051 + ... + 174067056.

It is an arithmetic number, because the mean of its divisors is an integer number (348134108).

Almost surely, 2^1044402321 is an apocalyptic number.

It is an amenable number.

1044402321 is a deficient number, since it is larger than the sum of its proper divisors (348134111).

1044402321 is an equidigital number, since it uses as much as digits as its factorization.

1044402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348134110.

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

The square root of 1044402321 is about 32317.2140043043. The cubic root of 1044402321 is about 1014.5869596727.

Adding to 1044402321 its reverse (1232044401), we get a palindrome (2276446722).

The spelling of 1044402321 in words is "one billion, forty-four million, four hundred two thousand, three hundred twenty-one".