8509808473 has 8 divisors (see below), whose sum is σ = 9012251592. Its totient is φ = 8007572736.

The previous prime is 8509808467. The next prime is 8509808491. The reversal of 8509808473 is 3748089058.

It can be written as a sum of positive squares in 4 ways, for example, as 7603316809 + 906491664 = 87197^2 + 30108^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8509808473 - 2⁵ = 8509808441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8509808473.

It is not an unprimeable number, because it can be changed into a prime (8509808413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37011 + ... + 135607.

It is an arithmetic number, because the mean of its divisors is an integer number (1126531449).

Almost surely, 2^8509808473 is an apocalyptic number.

It is an amenable number.

8509808473 is a deficient number, since it is larger than the sum of its proper divisors (502443119).

8509808473 is a wasteful number, since it uses less digits than its factorization.

8509808473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103691.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 8509808473 is about 92248.6231496167. The cubic root of 8509808473 is about 2041.6122453606.

The spelling of 8509808473 in words is "eight billion, five hundred nine million, eight hundred eight thousand, four hundred seventy-three".