9989769530 has 64 divisors (see below), whose sum is σ = 20092520448. Its totient is φ = 3551143680.

The previous prime is 9989769529. The next prime is 9989769533. The reversal of 9989769530 is 359679899.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9989769533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 787619 + ... + 800201.

It is an arithmetic number, because the mean of its divisors is an integer number (313945632).

Almost surely, 2^9989769530 is an apocalyptic number.

9989769530 is an abundant number, since it is smaller than the sum of its proper divisors (10102750918).

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

9989769530 is a wasteful number, since it uses less digits than its factorization.

9989769530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12831.

The product of its (nonzero) digits is 33067440, while the sum is 65.

The square root of 9989769530 is about 99948.8345604890. The cubic root of 9989769530 is about 2153.6997433644.

The spelling of 9989769530 in words is "nine billion, nine hundred eighty-nine million, seven hundred sixty-nine thousand, five hundred thirty".