989021200 has 60 divisors (see below), whose sum is σ = 2397260628. Its totient is φ = 392089600.

The previous prime is 989021161. The next prime is 989021203. The reversal of 989021200 is 2120989.

It can be written as a sum of positive squares in 6 ways, for example, as 526427136 + 462594064 = 22944^2 + 21508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989021203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34260 + ... + 56140.

Almost surely, 2^989021200 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 989021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198630314).

989021200 is an abundant number, since it is smaller than the sum of its proper divisors (1408239428).

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

989021200 is a wasteful number, since it uses less digits than its factorization.

989021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22012 (or 22001 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 989021200 is about 31448.7074456169. The cubic root of 989021200 is about 996.3269250387.

The spelling of 989021200 in words is "nine hundred eighty-nine million, twenty-one thousand, two hundred".