9896558689 has 4 divisors (see below), whose sum is σ = 9933349140. Its totient is φ = 9859768240.

The previous prime is 9896558669. The next prime is 9896558723. The reversal of 9896558689 is 9868556989.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2395613025 + 7500945664 = 48945^2 + 86608^2 .

It is a cyclic number.

It is not a de Polignac number, because 9896558689 - 2⁷ = 9896558561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9896558669) 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 3 ways as a sum of consecutive naturals, for example, 18394822 + ... + 18395359.

It is an arithmetic number, because the mean of its divisors is an integer number (2483337285).

Almost surely, 2^9896558689 is an apocalyptic number.

It is an amenable number.

9896558689 is a deficient number, since it is larger than the sum of its proper divisors (36790451).

9896558689 is a wasteful number, since it uses less digits than its factorization.

9896558689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36790450.

The product of its digits is 335923200, while the sum is 73.

The square root of 9896558689 is about 99481.4489691420. The cubic root of 9896558689 is about 2146.9803427660.

The spelling of 9896558689 in words is "nine billion, eight hundred ninety-six million, five hundred fifty-eight thousand, six hundred eighty-nine".