478305017 has 4 divisors (see below), whose sum is σ = 478364496. Its totient is φ = 478245540.

The previous prime is 478304999. The next prime is 478305029. The reversal of 478305017 is 710503874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 710503874 = 2 ⋅355251937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478305017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478305067) 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, 15359 + ... + 34532.

It is an arithmetic number, because the mean of its divisors is an integer number (119591124).

Almost surely, 2^478305017 is an apocalyptic number.

It is an amenable number.

478305017 is a deficient number, since it is larger than the sum of its proper divisors (59479).

478305017 is an equidigital number, since it uses as much as digits as its factorization.

478305017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59478.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 478305017 is about 21870.1855730581. The cubic root of 478305017 is about 782.0508254457.

The spelling of 478305017 in words is "four hundred seventy-eight million, three hundred five thousand, seventeen".