84442871 has 4 divisors (see below), whose sum is σ = 84595032. Its totient is φ = 84290712.

The previous prime is 84442861. The next prime is 84442873. The reversal of 84442871 is 17824448.

It is a happy number.

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 84442871 - 2⁶ = 84442807 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 (84442873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75245 + ... + 76358.

It is an arithmetic number, because the mean of its divisors is an integer number (21148758).

Almost surely, 2^84442871 is an apocalyptic number.

84442871 is a deficient number, since it is larger than the sum of its proper divisors (152161).

84442871 is a wasteful number, since it uses less digits than its factorization.

84442871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152160.

The product of its digits is 57344, while the sum is 38.

The square root of 84442871 is about 9189.2802220849. The cubic root of 84442871 is about 438.7202327729.

The spelling of 84442871 in words is "eighty-four million, four hundred forty-two thousand, eight hundred seventy-one".