1044505405 has 4 divisors (see below), whose sum is σ = 1253406492. Its totient is φ = 835604320.

The previous prime is 1044505403. The next prime is 1044505421. The reversal of 1044505405 is 5045054401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299324601 + 745180804 = 17301^2 + 27298^2 .

It is not a de Polignac number, because 1044505405 - 2¹ = 1044505403 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 (1044505403) 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 3 ways as a sum of consecutive naturals, for example, 104450536 + ... + 104450545.

It is an arithmetic number, because the mean of its divisors is an integer number (313351623).

Almost surely, 2^1044505405 is an apocalyptic number.

It is an amenable number.

1044505405 is a deficient number, since it is larger than the sum of its proper divisors (208901087).

1044505405 is an equidigital number, since it uses as much as digits as its factorization.

1044505405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208901086.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1044505405 is about 32318.8088425301. The cubic root of 1044505405 is about 1014.6203389683.

Adding to 1044505405 its reverse (5045054401), we get a palindrome (6089559806).

The spelling of 1044505405 in words is "one billion, forty-four million, five hundred five thousand, four hundred five".