989543120 has 30 divisors (see below), whose sum is σ = 2301342102. Its totient is φ = 395704704.

The previous prime is 989543119. The next prime is 989543129. The reversal of 989543120 is 21345989.

It can be written as a sum of positive squares in 3 ways, for example, as 611473984 + 378069136 = 24728^2 + 19444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989543129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279602 + ... + 283118.

Almost surely, 2^989543120 is an apocalyptic number.

It is an amenable number.

989543120 is an abundant number, since it is smaller than the sum of its proper divisors (1311798982).

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

989543120 is an frugal number, since it uses more digits than its factorization.

989543120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047 (or 3524 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 989543120 is about 31457.0043074670. The cubic root of 989543120 is about 996.5021526627.

The spelling of 989543120 in words is "nine hundred eighty-nine million, five hundred forty-three thousand, one hundred twenty".