478770805 has 8 divisors (see below), whose sum is σ = 580213944. Its totient is φ = 379224000.

The previous prime is 478770791. The next prime is 478770839. The reversal of 478770805 is 508077874.

It can be written as a sum of positive squares in 4 ways, for example, as 142635249 + 336135556 = 11943^2 + 18334^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-478770805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473526 + ... + 474535.

It is an arithmetic number, because the mean of its divisors is an integer number (72526743).

Almost surely, 2^478770805 is an apocalyptic number.

It is an amenable number.

478770805 is a deficient number, since it is larger than the sum of its proper divisors (101443139).

478770805 is a wasteful number, since it uses less digits than its factorization.

478770805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948167.

The product of its (nonzero) digits is 439040, while the sum is 46.

The square root of 478770805 is about 21880.8319083165. The cubic root of 478770805 is about 782.3046047255.

The spelling of 478770805 in words is "four hundred seventy-eight million, seven hundred seventy thousand, eight hundred five".