804851 has 4 divisors (see below), whose sum is σ = 814632. Its totient is φ = 795072.

The previous prime is 804847. The next prime is 804857. The reversal of 804851 is 158408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 804851 - 2² = 804847 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 804851.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 804851.

It is not an unprimeable number, because it can be changed into a prime (804857) 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, 4766 + ... + 4931.

It is an arithmetic number, because the mean of its divisors is an integer number (203658).

2⁸⁰⁴⁸⁵¹ is an apocalyptic number.

804851 is a deficient number, since it is larger than the sum of its proper divisors (9781).

804851 is an equidigital number, since it uses as much as digits as its factorization.

804851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9780.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 804851 is about 897.1348839500. The cubic root of 804851 is about 93.0190349136.

The spelling of 804851 in words is "eight hundred four thousand, eight hundred fifty-one".