9971297 has 4 divisors (see below), whose sum is σ = 11395776. Its totient is φ = 8546820.

The previous prime is 9971287. The next prime is 9971303. The reversal of 9971297 is 7921799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7921799 = 613 ⋅12923.

It is a cyclic number.

It is not a de Polignac number, because 9971297 - 2⁴ = 9971281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9971207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712229 + ... + 712242.

It is an arithmetic number, because the mean of its divisors is an integer number (2848944).

Almost surely, 2^9971297 is an apocalyptic number.

It is an amenable number.

9971297 is a deficient number, since it is larger than the sum of its proper divisors (1424479).

9971297 is a wasteful number, since it uses less digits than its factorization.

9971297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424478.

The product of its digits is 71442, while the sum is 44.

The square root of 9971297 is about 3157.7360561010. The cubic root of 9971297 is about 215.2371423409.

The spelling of 9971297 in words is "nine million, nine hundred seventy-one thousand, two hundred ninety-seven".