809680219 has 8 divisors (see below), whose sum is σ = 821230592. Its totient is φ = 798201000.

The previous prime is 809680147. The next prime is 809680241. The reversal of 809680219 is 912086908.

It is a happy number.

809680219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 809680219 - 2⁹ = 809679707 is a prime.

It is a super-2 number, since 2×809680219² = 1311164114079775922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809680019) 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, 5344 + ... + 40594.

It is an arithmetic number, because the mean of its divisors is an integer number (102653824).

Almost surely, 2^809680219 is an apocalyptic number.

809680219 is a deficient number, since it is larger than the sum of its proper divisors (11550373).

809680219 is a wasteful number, since it uses less digits than its factorization.

809680219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35577.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 809680219 is about 28454.8804074099. The cubic root of 809680219 is about 932.0470647854.

The spelling of 809680219 in words is "eight hundred nine million, six hundred eighty thousand, two hundred nineteen".