9867797 has 2 divisors, whose sum is σ = 9867798. Its totient is φ = 9867796.

The previous prime is 9867779. The next prime is 9867799. The reversal of 9867797 is 7977689.

It is a happy number.

Together with previous prime (9867779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7431076 + 2436721 = 2726^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 9867797 - 2⁸ = 9867541 is a prime.

Together with 9867799, 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 (9867799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933898 + 4933899.

It is an arithmetic number, because the mean of its divisors is an integer number (4933899).

Almost surely, 2^9867797 is an apocalyptic number.

It is an amenable number.

9867797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9867797 is an equidigital number, since it uses as much as digits as its factorization.

9867797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 53.

The square root of 9867797 is about 3141.3049836016. The cubic root of 9867797 is about 214.4898450790.

The spelling of 9867797 in words is "nine million, eight hundred sixty-seven thousand, seven hundred ninety-seven".