9970921171 has 8 divisors (see below), whose sum is σ = 10009545920. Its totient is φ = 9932320872.

The previous prime is 9970921133. The next prime is 9970921183. The reversal of 9970921171 is 1711290799.

9970921171 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9970921171 - 2⁷ = 9970921043 is a prime.

It is a super-2 number, since 2×9970921171² (a number of 21 digits) contains 22 as substring.

It is the 99855-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9970928171) by changing a digit.

It is a nontrivial repunit in base 99854.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503100 + ... + 1509718.

It is an arithmetic number, because the mean of its divisors is an integer number (1251193240).

Almost surely, 2^9970921171 is an apocalyptic number.

9970921171 is a deficient number, since it is larger than the sum of its proper divisors (38624749).

9970921171 is a wasteful number, since it uses less digits than its factorization.

9970921171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225.

The product of its (nonzero) digits is 71442, while the sum is 46.

The square root of 9970921171 is about 99854.5000037555. The cubic root of 9970921171 is about 2152.3443813316.

The spelling of 9970921171 in words is "nine billion, nine hundred seventy million, nine hundred twenty-one thousand, one hundred seventy-one".