84871 has 2 divisors, whose sum is σ = 84872. Its totient is φ = 84870.

The previous prime is 84869. The next prime is 84913. The reversal of 84871 is 17848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84871 - 2¹ = 84869 is a prime.

Together with 84869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42435 + 42436.

It is an arithmetic number, because the mean of its divisors is an integer number (42436).

2⁸⁴⁸⁷¹ is an apocalyptic number.

84871 is a deficient number, since it is larger than the sum of its proper divisors (1).

84871 is an equidigital number, since it uses as much as digits as its factorization.

84871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 28.

The square root of 84871 is about 291.3262775652. The cubic root of 84871 is about 43.9460426745.

It can be divided in two parts, 848 and 71, that added together give a palindrome (919).

The spelling of 84871 in words is "eighty-four thousand, eight hundred seventy-one".