9864798171 has 16 divisors (see below), whose sum is σ = 13379625600. Its totient is φ = 6463312128.

The previous prime is 9864798127. The next prime is 9864798197. The reversal of 9864798171 is 1718974689.

It is not a de Polignac number, because 9864798171 - 2⁹ = 9864797659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9864798121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1124715 + ... + 1133451.

It is an arithmetic number, because the mean of its divisors is an integer number (836226600).

Almost surely, 2^9864798171 is an apocalyptic number.

9864798171 is a deficient number, since it is larger than the sum of its proper divisors (3514827429).

9864798171 is a wasteful number, since it uses less digits than its factorization.

9864798171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15178.

The product of its digits is 6096384, while the sum is 60.

The square root of 9864798171 is about 99321.6903349918. The cubic root of 9864798171 is about 2144.6811501652.

The spelling of 9864798171 in words is "nine billion, eight hundred sixty-four million, seven hundred ninety-eight thousand, one hundred seventy-one".