9681971 has 4 divisors (see below), whose sum is σ = 10426752. Its totient is φ = 8937192.

The previous prime is 9681967. The next prime is 9681977. The reversal of 9681971 is 1791869.

It is a happy number.

9681971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1791869 = 557 ⋅3217.

It is a cyclic number.

It is not a de Polignac number, because 9681971 - 2² = 9681967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9681977) 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 3 ways as a sum of consecutive naturals, for example, 372371 + ... + 372396.

It is an arithmetic number, because the mean of its divisors is an integer number (2606688).

Almost surely, 2^9681971 is an apocalyptic number.

9681971 is a deficient number, since it is larger than the sum of its proper divisors (744781).

9681971 is a wasteful number, since it uses less digits than its factorization.

9681971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744780.

The product of its digits is 27216, while the sum is 41.

The square root of 9681971 is about 3111.5865727953. The cubic root of 9681971 is about 213.1349112615.

The spelling of 9681971 in words is "nine million, six hundred eighty-one thousand, nine hundred seventy-one".