504424404 has 144 divisors (see below), whose sum is σ = 1444060800. Its totient is φ = 147121920.

The previous prime is 504424387. The next prime is 504424421. The reversal of 504424404 is 404424405.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (504424387) and next prime (504424421).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2534697 + ... + 2534895.

It is an arithmetic number, because the mean of its divisors is an integer number (10028200).

Almost surely, 2^504424404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 504424404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722030400).

504424404 is an abundant number, since it is smaller than the sum of its proper divisors (939636396).

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

504424404 is a wasteful number, since it uses less digits than its factorization.

504424404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 504424404 is about 22459.3945599609. The cubic root of 504424404 is about 796.0347556014.

Adding to 504424404 its reverse (404424405), we get a palindrome (908848809).

Subtracting from 504424404 its reverse (404424405), we obtain a palindrome (99999999).

The spelling of 504424404 in words is "five hundred four million, four hundred twenty-four thousand, four hundred four".