404006044 has 24 divisors (see below), whose sum is σ = 801471440. Its totient is φ = 176649984.

The previous prime is 404005951. The next prime is 404006077. The reversal of 404006044 is 440600404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203469 + ... + 205444.

Almost surely, 2^404006044 is an apocalyptic number.

It is an amenable number.

404006044 is a deficient number, since it is larger than the sum of its proper divisors (397465396).

404006044 is a wasteful number, since it uses less digits than its factorization.

404006044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408949 (or 408947 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404006044 is about 20099.9015917989. The cubic root of 404006044 is about 739.2578656648.

Adding to 404006044 its reverse (440600404), we get a palindrome (844606448).

The spelling of 404006044 in words is "four hundred four million, six thousand, forty-four".