2989440000 has 440 divisors, whose sum is σ = 11127000720. Its totient is φ = 792576000.

The previous prime is 2989439977. The next prime is 2989440001. The reversal of 2989440000 is 449892.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989440001) 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 39 ways as a sum of consecutive naturals, for example, 17279914 + ... + 17280086.

It is an arithmetic number, because the mean of its divisors is an integer number (25288638).

Almost surely, 2^2989440000 is an apocalyptic number.

2989440000 is a gapful number since it is divisible by the number (20) 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 2989440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5563500360).

2989440000 is an abundant number, since it is smaller than the sum of its proper divisors (8137560720).

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

2989440000 is an equidigital number, since it uses as much as digits as its factorization.

2989440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2989440000 is about 54675.7715994937. The cubic root of 2989440000 is about 1440.5553413586. Note that the first 3 decimals are identical.

Adding to 2989440000 its reverse (449892), we get a palindrome (2989889892).

The spelling of 2989440000 in words is "two billion, nine hundred eighty-nine million, four hundred forty thousand".