821094 has 8 divisors (see below), whose sum is σ = 1642200. Its totient is φ = 273696.

The previous prime is 821089. The next prime is 821099. The reversal of 821094 is 490128.

821094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (821089) and next prime (821099).

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

821094 is an admirable number.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

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 821094.

It is not an unprimeable number, because it can be changed into a prime (821099) 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, 68419 + ... + 68430.

It is an arithmetic number, because the mean of its divisors is an integer number (205275).

2⁸²¹⁰⁹⁴ is an apocalyptic number.

821094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

821094 is a wasteful number, since it uses less digits than its factorization.

821094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136854.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 821094 is about 906.1423729194. The cubic root of 821094 is about 93.6406226622.

It can be divided in two parts, 82 and 1094, that added together give a triangular number (1176 = T₄₈).

The spelling of 821094 in words is "eight hundred twenty-one thousand, ninety-four".