2044404421 has 4 divisors (see below), whose sum is σ = 2049885772. Its totient is φ = 2038923072.

The previous prime is 2044404413. The next prime is 2044404469. The reversal of 2044404421 is 1244044402.

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 1261244196 + 783160225 = 35514^2 + 27985^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044404421 - 2³ = 2044404413 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 (2044404821) 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, 2740116 + ... + 2740861.

It is an arithmetic number, because the mean of its divisors is an integer number (512471443).

Almost surely, 2^2044404421 is an apocalyptic number.

It is an amenable number.

2044404421 is a deficient number, since it is larger than the sum of its proper divisors (5481351).

2044404421 is an equidigital number, since it uses as much as digits as its factorization.

2044404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481350.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 2044404421 is about 45215.0906335484. The cubic root of 2044404421 is about 1269.1772257733.

Adding to 2044404421 its reverse (1244044402), we get a palindrome (3288448823).

The spelling of 2044404421 in words is "two billion, forty-four million, four hundred four thousand, four hundred twenty-one".