1004044001 has 4 divisors (see below), whose sum is σ = 1047698112. Its totient is φ = 960389892.

The previous prime is 1004043991. The next prime is 1004044043. The reversal of 1004044001 is 1004404001.

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 1004044001 - 2²⁶ = 936935137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004044051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21827021 + ... + 21827066.

It is an arithmetic number, because the mean of its divisors is an integer number (261924528).

Almost surely, 2^1004044001 is an apocalyptic number.

It is an amenable number.

1004044001 is a deficient number, since it is larger than the sum of its proper divisors (43654111).

1004044001 is an equidigital number, since it uses as much as digits as its factorization.

1004044001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43654110.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1004044001 is about 31686.6533575258. The cubic root of 1004044001 is about 1001.3461872999.

Adding to 1004044001 its reverse (1004404001), we get a palindrome (2008448002).

Subtracting 1004044001 from its reverse (1004404001), we obtain a square (360000 = 600²).

The spelling of 1004044001 in words is "one billion, four million, forty-four thousand, one".