989880768 has 84 divisors (see below), whose sum is σ = 2841833280. Its totient is φ = 329435136.

The previous prime is 989880767. The next prime is 989880797. The reversal of 989880768 is 867088989.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989880767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561873 + ... + 563631.

Almost surely, 2^989880768 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 989880768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420916640).

989880768 is an abundant number, since it is smaller than the sum of its proper divisors (1851952512).

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

989880768 is a wasteful number, since it uses less digits than its factorization.

989880768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The square root of 989880768 is about 31462.3706671954. The cubic root of 989880768 is about 996.6154806184.

The spelling of 989880768 in words is "nine hundred eighty-nine million, eight hundred eighty thousand, seven hundred sixty-eight".