503400404 has 48 divisors (see below), whose sum is σ = 962671248. Its totient is φ = 228953088.

The previous prime is 503400397. The next prime is 503400407. The reversal of 503400404 is 404004305.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 53875600 + 449524804 = 7340^2 + 21202^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503400407) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1608152 + ... + 1608464.

It is an arithmetic number, because the mean of its divisors is an integer number (20055651).

Almost surely, 2^503400404 is an apocalyptic number.

It is an amenable number.

503400404 is a deficient number, since it is larger than the sum of its proper divisors (459270844).

503400404 is a wasteful number, since it uses less digits than its factorization.

503400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 503400404 is about 22436.5862822311. The cubic root of 503400404 is about 795.4957307948.

Adding to 503400404 its reverse (404004305), we get a palindrome (907404709).

The spelling of 503400404 in words is "five hundred three million, four hundred thousand, four hundred four".