84579871 has 8 divisors (see below), whose sum is σ = 85183488. Its totient is φ = 83979000.

The previous prime is 84579857. The next prime is 84579877. The reversal of 84579871 is 17897548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84579871 - 2⁹ = 84579359 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 (84579877) 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 7 ways as a sum of consecutive naturals, for example, 133726 + ... + 134356.

It is an arithmetic number, because the mean of its divisors is an integer number (10647936).

Almost surely, 2^84579871 is an apocalyptic number.

84579871 is a deficient number, since it is larger than the sum of its proper divisors (603617).

84579871 is a wasteful number, since it uses less digits than its factorization.

84579871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its digits is 564480, while the sum is 49.

The square root of 84579871 is about 9196.7315389762. The cubic root of 84579871 is about 438.9573642831.

The spelling of 84579871 in words is "eighty-four million, five hundred seventy-nine thousand, eight hundred seventy-one".