478999503 has 6 divisors (see below), whose sum is σ = 691888184. Its totient is φ = 319332996.

The previous prime is 478999457. The next prime is 478999537. The reversal of 478999503 is 305999874.

478999503 is a `hidden beast` number, since 47 + 8 + 9 + 99 + 503 = 666.

It is not a de Polignac number, because 478999503 - 2⁶ = 478999439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478999503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478999553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26611075 + ... + 26611092.

Almost surely, 2^478999503 is an apocalyptic number.

478999503 is a deficient number, since it is larger than the sum of its proper divisors (212888681).

478999503 is a wasteful number, since it uses less digits than its factorization.

478999503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53222173 (or 53222170 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 478999503 is about 21886.0572739815. The cubic root of 478999503 is about 782.4291479772.

The spelling of 478999503 in words is "four hundred seventy-eight million, nine hundred ninety-nine thousand, five hundred three".