9980000 has 60 divisors (see below), whose sum is σ = 24601500. Its totient is φ = 3984000.

The previous prime is 9979993. The next prime is 9980017. The reversal of 9980000 is 899.

It is a happy number.

It is an Ulam number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19751 + ... + 20249.

It is an arithmetic number, because the mean of its divisors is an integer number (410025).

Almost surely, 2^9980000 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 9980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12300750).

9980000 is an abundant number, since it is smaller than the sum of its proper divisors (14621500).

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

9980000 is an equidigital number, since it uses as much as digits as its factorization.

9980000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 9980000 is about 3159.1137997863. The cubic root of 9980000 is about 215.2997441647.

Adding to 9980000 its reverse (899), we get a palindrome (9980899).

The spelling of 9980000 in words is "nine million, nine hundred eighty thousand".