9686844489 has 16 divisors (see below), whose sum is σ = 14768252928. Its totient is φ = 5532584592.

The previous prime is 9686844487. The next prime is 9686844491. The reversal of 9686844489 is 9844486869.

It is an interprime number because it is at equal distance from previous prime (9686844487) and next prime (9686844491).

It is not a de Polignac number, because 9686844489 - 2¹ = 9686844487 is a prime.

It is a super-2 number, since 2×9686844489² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9686844487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71217 + ... + 156350.

It is an arithmetic number, because the mean of its divisors is an integer number (923015808).

Almost surely, 2^9686844489 is an apocalyptic number.

It is an amenable number.

9686844489 is a deficient number, since it is larger than the sum of its proper divisors (5081408439).

9686844489 is a wasteful number, since it uses less digits than its factorization.

9686844489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229604.

The product of its digits is 95551488, while the sum is 66.

The square root of 9686844489 is about 98421.7683696041. The cubic root of 9686844489 is about 2131.7066625445.

The spelling of 9686844489 in words is "nine billion, six hundred eighty-six million, eight hundred forty-four thousand, four hundred eighty-nine".