1004405005 has 4 divisors (see below), whose sum is σ = 1205286012. Its totient is φ = 803524000.

The previous prime is 1004404927. The next prime is 1004405021. The reversal of 1004405005 is 5005044001.

1004405005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5005044001 = 17 ⋅294414353.

It can be written as a sum of positive squares in 2 ways, for example, as 526151844 + 478253161 = 22938^2 + 21869^2 .

It is not a de Polignac number, because 1004405005 - 2¹¹ = 1004402957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100440496 + ... + 100440505.

It is an arithmetic number, because the mean of its divisors is an integer number (301321503).

Almost surely, 2^1004405005 is an apocalyptic number.

It is an amenable number.

1004405005 is a deficient number, since it is larger than the sum of its proper divisors (200881007).

1004405005 is an equidigital number, since it uses as much as digits as its factorization.

1004405005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200881006.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1004405005 is about 31692.3493133595. The cubic root of 1004405005 is about 1001.4661842531.

Adding to 1004405005 its reverse (5005044001), we get a palindrome (6009449006).

The spelling of 1004405005 in words is "one billion, four million, four hundred five thousand, five".