1044005663 has 8 divisors (see below), whose sum is σ = 1049478768. Its totient is φ = 1038541504.

The previous prime is 1044005657. The next prime is 1044005681. The reversal of 1044005663 is 3665004401.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1044005663 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 (1044005363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465581 + ... + 467817.

It is an arithmetic number, because the mean of its divisors is an integer number (131184846).

Almost surely, 2^1044005663 is an apocalyptic number.

1044005663 is a deficient number, since it is larger than the sum of its proper divisors (5473105).

1044005663 is a wasteful number, since it uses less digits than its factorization.

1044005663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1044005663 is about 32311.0764754132. The cubic root of 1044005663 is about 1014.4584986427.

The spelling of 1044005663 in words is "one billion, forty-four million, five thousand, six hundred sixty-three".