503000404 has 12 divisors (see below), whose sum is σ = 880557300. Its totient is φ = 251412608.

The previous prime is 503000401. The next prime is 503000419. The reversal of 503000404 is 404000305.

It can be written as a sum of positive squares in 2 ways, for example, as 326163600 + 176836804 = 18060^2 + 13298^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503000401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7999 + ... + 32710.

It is an arithmetic number, because the mean of its divisors is an integer number (73379775).

Almost surely, 2^503000404 is an apocalyptic number.

It is an amenable number.

503000404 is a deficient number, since it is larger than the sum of its proper divisors (377556896).

503000404 is a wasteful number, since it uses less digits than its factorization.

503000404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43802 (or 43800 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 503000404 is about 22427.6704987388. The cubic root of 503000404 is about 795.2849756936.

Adding to 503000404 its reverse (404000305), we get a palindrome (907000709).

Subtracting from 503000404 its reverse (404000305), we obtain a palindrome (99000099).

The spelling of 503000404 in words is "five hundred three million, four hundred four", and thus it is an aban number.