84867871 has 4 divisors (see below), whose sum is σ = 92583144. Its totient is φ = 77152600.

The previous prime is 84867847. The next prime is 84867911. The reversal of 84867871 is 17876848.

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 84867871 - 2¹⁵ = 84835103 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 (84867071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3857620 + ... + 3857641.

It is an arithmetic number, because the mean of its divisors is an integer number (23145786).

Almost surely, 2^84867871 is an apocalyptic number.

84867871 is a deficient number, since it is larger than the sum of its proper divisors (7715273).

84867871 is a wasteful number, since it uses less digits than its factorization.

84867871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715272.

The product of its digits is 602112, while the sum is 49.

The square root of 84867871 is about 9212.3759693143. The cubic root of 84867871 is about 439.4550260440.

The spelling of 84867871 in words is "eighty-four million, eight hundred sixty-seven thousand, eight hundred seventy-one".