2044004405 has 4 divisors (see below), whose sum is σ = 2452805292. Its totient is φ = 1635203520.

The previous prime is 2044004371. The next prime is 2044004449. The reversal of 2044004405 is 5044004402.

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 268730449 + 1775273956 = 16393^2 + 42134^2 .

It is not a de Polignac number, because 2044004405 - 2¹⁴ = 2043988021 is a prime.

It is a Duffinian number.

It is a Curzon 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, 204400436 + ... + 204400445.

It is an arithmetic number, because the mean of its divisors is an integer number (613201323).

Almost surely, 2^2044004405 is an apocalyptic number.

It is an amenable number.

2044004405 is a deficient number, since it is larger than the sum of its proper divisors (408800887).

2044004405 is an equidigital number, since it uses as much as digits as its factorization.

2044004405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408800886.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 2044004405 is about 45210.6669382348. Note that the first 3 decimals coincide. The cubic root of 2044004405 is about 1269.0944430147.

Adding to 2044004405 its reverse (5044004402), we get a palindrome (7088008807).

The spelling of 2044004405 in words is "two billion, forty-four million, four thousand, four hundred five".