9939554446689 has 12 divisors (see below), whose sum is σ = 16408153372416. Its totient is φ = 5679745398072.

The previous prime is 9939554446597. The next prime is 9939554446721. The reversal of 9939554446689 is 9866444559399.

9939554446689 is a `hidden beast` number, since 9 + 9 + 3 + 9 + 5 + 544 + 4 + 6 + 68 + 9 = 666.

It is not a de Polignac number, because 9939554446689 - 2²⁰ = 9939553398113 is a prime.

It is a super-3 number, since 3×9939554446689³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9939554406689) 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, 78885352689 + ... + 78885352814.

It is an arithmetic number, because the mean of its divisors is an integer number (1367346114368).

Almost surely, 2^{9939554446689} is an apocalyptic number.

It is an amenable number.

9939554446689 is a deficient number, since it is larger than the sum of its proper divisors (6468598925727).

9939554446689 is a wasteful number, since it uses less digits than its factorization.

9939554446689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157770705516 (or 157770705513 counting only the distinct ones).

The product of its digits is 9069926400, while the sum is 81.

The spelling of 9939554446689 in words is "nine trillion, nine hundred thirty-nine billion, five hundred fifty-four million, four hundred forty-six thousand, six hundred eighty-nine".