868988740 has 12 divisors (see below), whose sum is σ = 1824876396. Its totient is φ = 347595488.

The previous prime is 868988651. The next prime is 868988767. The reversal of 868988740 is 47889868.

It can be written as a sum of positive squares in 2 ways, for example, as 654131776 + 214856964 = 25576^2 + 14658^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21724699 + ... + 21724738.

It is an arithmetic number, because the mean of its divisors is an integer number (152073033).

Almost surely, 2^868988740 is an apocalyptic number.

It is an amenable number.

868988740 is an abundant number, since it is smaller than the sum of its proper divisors (955887656).

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

868988740 is a wasteful number, since it uses less digits than its factorization.

868988740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43449446 (or 43449444 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The square root of 868988740 is about 29478.6149606795. The cubic root of 868988740 is about 954.2702464885.

The spelling of 868988740 in words is "eight hundred sixty-eight million, nine hundred eighty-eight thousand, seven hundred forty".