9727997 has 2 divisors, whose sum is σ = 9727998. Its totient is φ = 9727996.

The previous prime is 9727973. The next prime is 9727999. The reversal of 9727997 is 7997279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8916196 + 811801 = 2986^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 9727997 - 2¹⁰ = 9726973 is a prime.

Together with 9727999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9727999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4863998 + 4863999.

It is an arithmetic number, because the mean of its divisors is an integer number (4863999).

Almost surely, 2^9727997 is an apocalyptic number.

It is an amenable number.

9727997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9727997 is an equidigital number, since it uses as much as digits as its factorization.

9727997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 50.

The square root of 9727997 is about 3118.9737094115. The cubic root of 9727997 is about 213.4721099537.

The spelling of 9727997 in words is "nine million, seven hundred twenty-seven thousand, nine hundred ninety-seven".