989008748 has 144 divisors (see below), whose sum is σ = 2359526400. Its totient is φ = 358162560.

The previous prime is 989008747. The next prime is 989008751. The reversal of 989008748 is 847800989.

It is a self number, because there is not a number n which added to its sum of digits gives 989008748.

It is not an unprimeable number, because it can be changed into a prime (989008747) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1500443 + ... + 1501101.

It is an arithmetic number, because the mean of its divisors is an integer number (16385600).

Almost surely, 2^989008748 is an apocalyptic number.

989008748 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989008748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179763200).

989008748 is an abundant number, since it is smaller than the sum of its proper divisors (1370517652).

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

989008748 is a wasteful number, since it uses less digits than its factorization.

989008748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 989008748 is about 31448.5094718335. The cubic root of 989008748 is about 996.3227436943.

The spelling of 989008748 in words is "nine hundred eighty-nine million, eight thousand, seven hundred forty-eight".