806394809 has 8 divisors (see below), whose sum is σ = 879917952. Its totient is φ = 732907440.

The previous prime is 806394763. The next prime is 806394817. The reversal of 806394809 is 908493608.

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 806394809 - 2²⁰ = 805346233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806394859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64352 + ... + 75854.

It is an arithmetic number, because the mean of its divisors is an integer number (109989744).

Almost surely, 2^806394809 is an apocalyptic number.

It is an amenable number.

806394809 is a deficient number, since it is larger than the sum of its proper divisors (73523143).

806394809 is a wasteful number, since it uses less digits than its factorization.

806394809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17887.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 806394809 is about 28397.0915588199. The cubic root of 806394809 is about 930.7847113397.

The spelling of 806394809 in words is "eight hundred six million, three hundred ninety-four thousand, eight hundred nine".