1844404 has 6 divisors (see below), whose sum is σ = 3227714. Its totient is φ = 922200.

The previous prime is 1844383. The next prime is 1844411. The reversal of 1844404 is 4044481.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1822500 + 21904 = 1350^2 + 148^2 .

It is a super-2 number, since 2×1844404² = 6803652230432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230547 + ... + 230554.

2^1844404 is an apocalyptic number.

It is an amenable number.

1844404 is a deficient number, since it is larger than the sum of its proper divisors (1383310).

1844404 is a wasteful number, since it uses less digits than its factorization.

1844404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461105 (or 461103 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 1844404 is about 1358.0883623682. The cubic root of 1844404 is about 122.6362000318.

Adding to 1844404 its reverse (4044481), we get a palindrome (5888885).

The spelling of 1844404 in words is "one million, eight hundred forty-four thousand, four hundred four".