868509212 has 12 divisors (see below), whose sum is σ = 1521369696. Its totient is φ = 433832160.

The previous prime is 868509203. The next prime is 868509241. The reversal of 868509212 is 212905868.

It is a self number, because there is not a number n which added to its sum of digits gives 868509212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100964 + ... + 109227.

It is an arithmetic number, because the mean of its divisors is an integer number (126780808).

Almost surely, 2^868509212 is an apocalyptic number.

It is an amenable number.

868509212 is a deficient number, since it is larger than the sum of its proper divisors (652860484).

868509212 is a wasteful number, since it uses less digits than its factorization.

868509212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211228 (or 211226 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 868509212 is about 29470.4803489865. The cubic root of 868509212 is about 954.0946847584.

The spelling of 868509212 in words is "eight hundred sixty-eight million, five hundred nine thousand, two hundred twelve".