806104809 has 6 divisors (see below), whose sum is σ = 1164373626. Its totient is φ = 537403200.

The previous prime is 806104807. The next prime is 806104843. The reversal of 806104809 is 908401608.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 735494400 + 70610409 = 27120^2 + 8403^2 .

It is not a de Polignac number, because 806104809 - 2¹ = 806104807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (806104801) 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 5 ways as a sum of consecutive naturals, for example, 44783592 + ... + 44783609.

It is an arithmetic number, because the mean of its divisors is an integer number (194062271).

Almost surely, 2^806104809 is an apocalyptic number.

It is an amenable number.

806104809 is a deficient number, since it is larger than the sum of its proper divisors (358268817).

806104809 is a wasteful number, since it uses less digits than its factorization.

806104809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89567207 (or 89567204 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 806104809 is about 28391.9849429377. The cubic root of 806104809 is about 930.6731200417.

The spelling of 806104809 in words is "eight hundred six million, one hundred four thousand, eight hundred nine".