871985092 has 24 divisors (see below), whose sum is σ = 1668925440. Its totient is φ = 395350560.

The previous prime is 871985077. The next prime is 871985099. The reversal of 871985092 is 290589178.

It is not an unprimeable number, because it can be changed into a prime (871985099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7492 + ... + 42427.

It is an arithmetic number, because the mean of its divisors is an integer number (69538560).

Almost surely, 2^871985092 is an apocalyptic number.

It is an amenable number.

871985092 is a deficient number, since it is larger than the sum of its proper divisors (796940348).

871985092 is a wasteful number, since it uses less digits than its factorization.

871985092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50331 (or 50329 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 871985092 is about 29529.3936950964. The cubic root of 871985092 is about 955.3657917286.

The spelling of 871985092 in words is "eight hundred seventy-one million, nine hundred eighty-five thousand, ninety-two".