989233860 has 144 divisors (see below), whose sum is σ = 2957169600. Its totient is φ = 247027968.

The previous prime is 989233853. The next prime is 989233873. The reversal of 989233860 is 68332989.

989233860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2360731 + ... + 2361149.

It is an arithmetic number, because the mean of its divisors is an integer number (20535900).

Almost surely, 2^989233860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989233860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478584800).

989233860 is an abundant number, since it is smaller than the sum of its proper divisors (1967935740).

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

989233860 is a wasteful number, since it uses less digits than its factorization.

989233860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 989233860 is about 31452.0883249427. The cubic root of 989233860 is about 996.3983302151.

The spelling of 989233860 in words is "nine hundred eighty-nine million, two hundred thirty-three thousand, eight hundred sixty".