9798785171 has 8 divisors (see below), whose sum is σ = 11212460640. Its totient is φ = 8388571968.

The previous prime is 9798785153. The next prime is 9798785173. The reversal of 9798785171 is 1715878979.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9798785171 - 2¹⁸ = 9798523027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9798785173) 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 7 ways as a sum of consecutive naturals, for example, 859496 + ... + 870821.

It is an arithmetic number, because the mean of its divisors is an integer number (1401557580).

Almost surely, 2^9798785171 is an apocalyptic number.

9798785171 is a deficient number, since it is larger than the sum of its proper divisors (1413675469).

9798785171 is a wasteful number, since it uses less digits than its factorization.

9798785171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731133.

The product of its digits is 8890560, while the sum is 62.

The square root of 9798785171 is about 98988.8133629250. The cubic root of 9798785171 is about 2139.8865321822.

The spelling of 9798785171 in words is "nine billion, seven hundred ninety-eight million, seven hundred eighty-five thousand, one hundred seventy-one".