9847997 has 2 divisors, whose sum is σ = 9847998. Its totient is φ = 9847996.

The previous prime is 9847993. The next prime is 9848021. The reversal of 9847997 is 7997489.

9847997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5134756 + 4713241 = 2266^2 + 2171^2 .

It is an emirp because it is prime and its reverse (7997489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9847997 - 2² = 9847993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9847991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4923998 + 4923999.

It is an arithmetic number, because the mean of its divisors is an integer number (4923999).

Almost surely, 2^9847997 is an apocalyptic number.

It is an amenable number.

9847997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847997 is an equidigital number, since it uses as much as digits as its factorization.

9847997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The square root of 9847997 is about 3138.1518446372. The cubic root of 9847997 is about 214.3462891395.

The spelling of 9847997 in words is "nine million, eight hundred forty-seven thousand, nine hundred ninety-seven".