9938522171 has 8 divisors (see below), whose sum is σ = 9979284240. Its totient is φ = 9897818112.

The previous prime is 9938522149. The next prime is 9938522179. The reversal of 9938522171 is 1712258399.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9938522171 - 2⁶ = 9938522107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9938522179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347120 + ... + 374658.

It is an arithmetic number, because the mean of its divisors is an integer number (1247410530).

Almost surely, 2^9938522171 is an apocalyptic number.

9938522171 is a deficient number, since it is larger than the sum of its proper divisors (40762069).

9938522171 is a wasteful number, since it uses less digits than its factorization.

9938522171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29005.

The product of its digits is 272160, while the sum is 47.

The square root of 9938522171 is about 99692.1369567330. The cubic root of 9938522171 is about 2150.0106126031.

The spelling of 9938522171 in words is "nine billion, nine hundred thirty-eight million, five hundred twenty-two thousand, one hundred seventy-one".