843804 has 48 divisors (see below), whose sum is σ = 2359840. Its totient is φ = 259200.

The previous prime is 843797. The next prime is 843811. The reversal of 843804 is 408348.

It is an interprime number because it is at equal distance from previous prime (843797) and next prime (843811).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

843804 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1104 + ... + 1704.

2⁸⁴³⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 843804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179920).

843804 is an abundant number, since it is smaller than the sum of its proper divisors (1516036).

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

843804 is a wasteful number, since it uses less digits than its factorization.

843804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 843804 is about 918.5880469503. The cubic root of 843804 is about 94.4960945728.

The spelling of 843804 in words is "eight hundred forty-three thousand, eight hundred four".