989830380 has 288 divisors, whose sum is σ = 3559514112. Its totient is φ = 203212800.

The previous prime is 989830379. The next prime is 989830381. The reversal of 989830380 is 83038989.

It is an interprime number because it is at equal distance from previous prime (989830379) and next prime (989830381).

It is not an unprimeable number, because it can be changed into a prime (989830381) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4107060 + ... + 4107300.

It is an arithmetic number, because the mean of its divisors is an integer number (12359424).

Almost surely, 2^989830380 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 989830380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779757056).

989830380 is an abundant number, since it is smaller than the sum of its proper divisors (2569683732).

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

989830380 is a wasteful number, since it uses less digits than its factorization.

989830380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 989830380 is about 31461.5698909002. The cubic root of 989830380 is about 996.5985700589.

The spelling of 989830380 in words is "nine hundred eighty-nine million, eight hundred thirty thousand, three hundred eighty".