809894 has 8 divisors (see below), whose sum is σ = 1278840. Its totient is φ = 383616.

The previous prime is 809891. The next prime is 809903. The reversal of 809894 is 498908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 21313 = 809894 / (8 + 0 + 9 + 8 + 9 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809891) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10619 + ... + 10694.

It is an arithmetic number, because the mean of its divisors is an integer number (159855).

2⁸⁰⁹⁸⁹⁴ is an apocalyptic number.

809894 is a deficient number, since it is larger than the sum of its proper divisors (468946).

809894 is a wasteful number, since it uses less digits than its factorization.

809894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21334.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 809894 is about 899.9411091844. The cubic root of 809894 is about 93.2129087463.

It can be divided in two parts, 8098 and 94, that added together give a 13-th power (8192 = 2¹³).

The spelling of 809894 in words is "eight hundred nine thousand, eight hundred ninety-four".