868989868 has 12 divisors (see below), whose sum is σ = 1529229240. Its totient is φ = 432067232.

The previous prime is 868989839. The next prime is 868989893.

868989868 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 868989797 and 868989806.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 606121 + ... + 607552.

It is an arithmetic number, because the mean of its divisors is an integer number (127435770).

Almost surely, 2^868989868 is an apocalyptic number.

It is an amenable number.

868989868 is a deficient number, since it is larger than the sum of its proper divisors (660239372).

868989868 is a wasteful number, since it uses less digits than its factorization.

868989868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213856 (or 1213854 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 70.

The square root of 868989868 is about 29478.6340931869. The cubic root of 868989868 is about 954.2706593885.

The spelling of 868989868 in words is "eight hundred sixty-eight million, nine hundred eighty-nine thousand, eight hundred sixty-eight".