809483647 has 4 divisors (see below), whose sum is σ = 925124176. Its totient is φ = 693843120.

The previous prime is 809483629. The next prime is 809483663. The reversal of 809483647 is 746384908.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 809483647 - 2¹¹ = 809481599 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 809483647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809489647) 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, 57820254 + ... + 57820267.

It is an arithmetic number, because the mean of its divisors is an integer number (231281044).

Almost surely, 2^809483647 is an apocalyptic number.

809483647 is a deficient number, since it is larger than the sum of its proper divisors (115640529).

809483647 is a wasteful number, since it uses less digits than its factorization.

809483647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115640528.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 809483647 is about 28451.4260978250. The cubic root of 809483647 is about 931.9716320487.

The spelling of 809483647 in words is "eight hundred nine million, four hundred eighty-three thousand, six hundred forty-seven".