1004021444 has 6 divisors (see below), whose sum is σ = 1757037534. Its totient is φ = 502010720.

The previous prime is 1004021423. The next prime is 1004021449. The reversal of 1004021444 is 4441204001.

It is a happy number.

1004021444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1000456900 + 3564544 = 31630^2 + 1888^2 .

It is not an unprimeable number, because it can be changed into a prime (1004021449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125502677 + ... + 125502684.

It is an arithmetic number, because the mean of its divisors is an integer number (292839589).

Almost surely, 2^1004021444 is an apocalyptic number.

It is an amenable number.

1004021444 is a deficient number, since it is larger than the sum of its proper divisors (753016090).

1004021444 is a wasteful number, since it uses less digits than its factorization.

1004021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251005365 (or 251005363 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1004021444 is about 31686.2974170224. The cubic root of 1004021444 is about 1001.3386884469.

Adding to 1004021444 its reverse (4441204001), we get a palindrome (5445225445).

The spelling of 1004021444 in words is "one billion, four million, twenty-one thousand, four hundred forty-four".