478808903 has 2 divisors, whose sum is σ = 478808904. Its totient is φ = 478808902.

The previous prime is 478808851. The next prime is 478808909. The reversal of 478808903 is 309808874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478808903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478808909) 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 as a sum of consecutive naturals, namely, 239404451 + 239404452.

It is an arithmetic number, because the mean of its divisors is an integer number (239404452).

Almost surely, 2^478808903 is an apocalyptic number.

478808903 is a deficient number, since it is larger than the sum of its proper divisors (1).

478808903 is an equidigital number, since it uses as much as digits as its factorization.

478808903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 478808903 is about 21881.7024703289. The cubic root of 478808903 is about 782.3253547030.

The spelling of 478808903 in words is "four hundred seventy-eight million, eight hundred eight thousand, nine hundred three".