809798 has 8 divisors (see below), whose sum is σ = 1325160. Its totient is φ = 368080.

The previous prime is 809797. The next prime is 809801. The reversal of 809798 is 897908.

809798 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (809797) 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, 18383 + ... + 18426.

It is an arithmetic number, because the mean of its divisors is an integer number (165645).

2⁸⁰⁹⁷⁹⁸ is an apocalyptic number.

809798 is a deficient number, since it is larger than the sum of its proper divisors (515362).

809798 is a wasteful number, since it uses less digits than its factorization.

809798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36822.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 809798 is about 899.8877707803. The cubic root of 809798 is about 93.2092256336.

The spelling of 809798 in words is "eight hundred nine thousand, seven hundred ninety-eight".