9809221671 has 6 divisors (see below), whose sum is σ = 14168875760. Its totient is φ = 6539481108.

The previous prime is 9809221661. The next prime is 9809221703. The reversal of 9809221671 is 1761229089.

9809221671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9809221671 - 2¹⁰ = 9809220647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9809221601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 544956751 + ... + 544956768.

Almost surely, 2^9809221671 is an apocalyptic number.

9809221671 is a deficient number, since it is larger than the sum of its proper divisors (4359654089).

9809221671 is a wasteful number, since it uses less digits than its factorization.

9809221671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089913525 (or 1089913522 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 9809221671 is about 99041.5148864354. The cubic root of 9809221671 is about 2140.6459801239.

The spelling of 9809221671 in words is "nine billion, eight hundred nine million, two hundred twenty-one thousand, six hundred seventy-one".