808851 has 4 divisors (see below), whose sum is σ = 1078472. Its totient is φ = 539232.

The previous prime is 808837. The next prime is 808853. The reversal of 808851 is 158808.

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

It is not a de Polignac number, because 808851 - 2¹³ = 800659 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808853) 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, 134806 + ... + 134811.

It is an arithmetic number, because the mean of its divisors is an integer number (269618).

2⁸⁰⁸⁸⁵¹ is an apocalyptic number.

808851 is a deficient number, since it is larger than the sum of its proper divisors (269621).

808851 is a wasteful number, since it uses less digits than its factorization.

808851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269620.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 808851 is about 899.3614401341. The cubic root of 808851 is about 93.1728776525.

The spelling of 808851 in words is "eight hundred eight thousand, eight hundred fifty-one".