9747971 has 4 divisors (see below), whose sum is σ = 9974712. Its totient is φ = 9521232.

The previous prime is 9747967. The next prime is 9747977. The reversal of 9747971 is 1797479.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1797479 = 73 ⋅24623.

It is not a de Polignac number, because 9747971 - 2² = 9747967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9747977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113306 + ... + 113391.

It is an arithmetic number, because the mean of its divisors is an integer number (2493678).

Almost surely, 2^9747971 is an apocalyptic number.

9747971 is a deficient number, since it is larger than the sum of its proper divisors (226741).

9747971 is a wasteful number, since it uses less digits than its factorization.

9747971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226740.

The product of its digits is 111132, while the sum is 44.

The square root of 9747971 is about 3122.1740822702. The cubic root of 9747971 is about 213.6181138697.

The spelling of 9747971 in words is "nine million, seven hundred forty-seven thousand, nine hundred seventy-one".