9845555489 has 32 divisors (see below), whose sum is σ = 13132968960. Its totient is φ = 7148865600.

The previous prime is 9845555449. The next prime is 9845555497.

9845555489 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9845555489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9845555449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34082 + ... + 144404.

It is an arithmetic number, because the mean of its divisors is an integer number (410405280).

Almost surely, 2^9845555489 is an apocalyptic number.

It is an amenable number.

9845555489 is a deficient number, since it is larger than the sum of its proper divisors (3287413471).

9845555489 is a wasteful number, since it uses less digits than its factorization.

9845555489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110421.

The product of its digits is 51840000, while the sum is 62.

The square root of 9845555489 is about 99224.7725570586. The cubic root of 9845555489 is about 2143.2857413014.

The spelling of 9845555489 in words is "nine billion, eight hundred forty-five million, five hundred fifty-five thousand, four hundred eighty-nine".