848821 has 4 divisors (see below), whose sum is σ = 852012. Its totient is φ = 845632.

The previous prime is 848807. The next prime is 848839. The reversal of 848821 is 128848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 470596 + 378225 = 686^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 848821 - 2⁵ = 848789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (848851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (213003).

2⁸⁴⁸⁸²¹ is an apocalyptic number.

It is an amenable number.

848821 is a deficient number, since it is larger than the sum of its proper divisors (3191).

848821 is a wasteful number, since it uses less digits than its factorization.

848821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190.

The product of its digits is 4096, while the sum is 31.

The square root of 848821 is about 921.3148213287. The cubic root of 848821 is about 94.6830062276.

The spelling of 848821 in words is "eight hundred forty-eight thousand, eight hundred twenty-one".