871973212 has 24 divisors (see below), whose sum is σ = 1665441792. Its totient is φ = 396169200.

The previous prime is 871973203. The next prime is 871973233. The reversal of 871973212 is 212379178.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154887 + ... + 160417.

It is an arithmetic number, because the mean of its divisors is an integer number (69393408).

Almost surely, 2^871973212 is an apocalyptic number.

It is an amenable number.

871973212 is a deficient number, since it is larger than the sum of its proper divisors (793468580).

871973212 is a wasteful number, since it uses less digits than its factorization.

871973212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9129 (or 9127 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 871973212 is about 29529.1925389097. The cubic root of 871973212 is about 955.3614530469.

It can be divided in two parts, 87197 and 3212, that added together give a palindrome (90409).

The spelling of 871973212 in words is "eight hundred seventy-one million, nine hundred seventy-three thousand, two hundred twelve".