2044404 has 36 divisors (see below), whose sum is σ = 5225220. Its totient is φ = 673920.

The previous prime is 2044391. The next prime is 2044411. The reversal of 2044404 is 4044402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1004004 + 1040400 = 1002^2 + 1020^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3664 + ... + 4184.

It is an arithmetic number, because the mean of its divisors is an integer number (145145).

2^2044404 is an apocalyptic number.

It is an amenable number.

2044404 is an abundant number, since it is smaller than the sum of its proper divisors (3180816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2044404 is a wasteful number, since it uses less digits than its factorization.

2044404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2044404 is about 1429.8265629089. The cubic root of 2044404 is about 126.9177138654.

Adding to 2044404 its reverse (4044402), we get a palindrome (6088806).

The spelling of 2044404 in words is "two million, forty-four thousand, four hundred four".