809478306 has 64 divisors (see below), whose sum is σ = 2213971200. Its totient is φ = 213487488.

The previous prime is 809478287. The next prime is 809478331. The reversal of 809478306 is 603874908.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77451 + ... + 87278.

It is an arithmetic number, because the mean of its divisors is an integer number (34593300).

Almost surely, 2^809478306 is an apocalyptic number.

809478306 is an abundant number, since it is smaller than the sum of its proper divisors (1404492894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809478306 is a wasteful number, since it uses less digits than its factorization.

809478306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164760 (or 164754 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 809478306 is about 28451.3322359428. The cubic root of 809478306 is about 931.9695823176.

It can be divided in two parts, 80947 and 8306, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 809478306 in words is "eight hundred nine million, four hundred seventy-eight thousand, three hundred six".