809473057 has 8 divisors (see below), whose sum is σ = 827164800. Its totient is φ = 791800944.

The previous prime is 809473001. The next prime is 809473069. The reversal of 809473057 is 750374908.

It is a happy number.

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 809473057 - 2⁷ = 809472929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809471057) 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, 104794 + ... + 112252.

It is an arithmetic number, because the mean of its divisors is an integer number (103395600).

Almost surely, 2^809473057 is an apocalyptic number.

It is an amenable number.

809473057 is a deficient number, since it is larger than the sum of its proper divisors (17691743).

809473057 is a wasteful number, since it uses less digits than its factorization.

809473057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9815.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 809473057 is about 28451.2399905523. The cubic root of 809473057 is about 931.9675678848.

The spelling of 809473057 in words is "eight hundred nine million, four hundred seventy-three thousand, fifty-seven".