1044400321 has 8 divisors (see below), whose sum is σ = 1106145504. Its totient is φ = 982689600.

The previous prime is 1044400319. The next prime is 1044400363. The reversal of 1044400321 is 1230044401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1044400321 - 2¹ = 1044400319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044404321) 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 7 ways as a sum of consecutive naturals, for example, 79786 + ... + 91948.

It is an arithmetic number, because the mean of its divisors is an integer number (138268188).

Almost surely, 2^1044400321 is an apocalyptic number.

It is an amenable number.

1044400321 is a deficient number, since it is larger than the sum of its proper divisors (61745183).

1044400321 is a wasteful number, since it uses less digits than its factorization.

1044400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17231.

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

The square root of 1044400321 is about 32317.1830610281. The cubic root of 1044400321 is about 1014.5863120375.

Adding to 1044400321 its reverse (1230044401), we get a palindrome (2274444722).

The spelling of 1044400321 in words is "one billion, forty-four million, four hundred thousand, three hundred twenty-one".