9820990289 has 12 divisors (see below), whose sum is σ = 11046024528. Its totient is φ = 8720536440.

The previous prime is 9820990261. The next prime is 9820990303.

9820990289 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-9820990289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9820990889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 938579 + ... + 948984.

It is an arithmetic number, because the mean of its divisors is an integer number (920502044).

Almost surely, 2^9820990289 is an apocalyptic number.

It is an amenable number.

9820990289 is a deficient number, since it is larger than the sum of its proper divisors (1225034239).

9820990289 is a wasteful number, since it uses less digits than its factorization.

9820990289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887628 (or 1887617 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 56.

The square root of 9820990289 is about 99100.9096275105. The cubic root of 9820990289 is about 2141.5017183087.

The spelling of 9820990289 in words is "nine billion, eight hundred twenty million, nine hundred ninety thousand, two hundred eighty-nine".