868747884 has 12 divisors (see below), whose sum is σ = 2027078424. Its totient is φ = 289582624.

The previous prime is 868747879. The next prime is 868747907. The reversal of 868747884 is 488747868.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36197817 + ... + 36197840.

It is an arithmetic number, because the mean of its divisors is an integer number (168923202).

Almost surely, 2^868747884 is an apocalyptic number.

It is an amenable number.

868747884 is an abundant number, since it is smaller than the sum of its proper divisors (1158330540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868747884 is a wasteful number, since it uses less digits than its factorization.

868747884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72395664 (or 72395662 counting only the distinct ones).

The product of its digits is 19267584, while the sum is 60.

The square root of 868747884 is about 29474.5294110016. The cubic root of 868747884 is about 954.1820739027.

The spelling of 868747884 in words is "eight hundred sixty-eight million, seven hundred forty-seven thousand, eight hundred eighty-four".