This number is a prime.
The largest known prime number that cannot be represented as the sum of less than nineteen fourth powers.
In the 611 distinct-digit squares only the digit 6 appears a prime number of times, appearing 479 times in the 4358 total digits. [Gaydos]
The first and last digit of 479 is 7 squared. If we repeat with the digits of 479 we obtain the prime 146479891. Will this procedure work again with 146479891? [Petrov]
The pair of consecutive primes (479, 487) is the only pair, at least up to 10^9, of consecutive primes (p,q) such that the reverse of the digits of p is equal to 2*q. [Galliani]