809814 has 16 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 267720.

The previous prime is 809803. The next prime is 809821. The reversal of 809814 is 418908.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 809814.

It is an unprimeable number.

809814 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2⁸⁰⁹⁸¹⁴ is an apocalyptic number.

809814 is an abundant number, since it is smaller than the sum of its proper divisors (823146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809814 is a wasteful number, since it uses less digits than its factorization.

809814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 809814 is about 899.8966607339. The cubic root of 809814 is about 93.2098395059.

The spelling of 809814 in words is "eight hundred nine thousand, eight hundred fourteen".