9812197 has 2 divisors, whose sum is σ = 9812198. Its totient is φ = 9812196.

The previous prime is 9812183. The next prime is 9812207. The reversal of 9812197 is 7912189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9036036 + 776161 = 3006^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 9812197 - 2²³ = 1423589 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 (9812167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4906098 + 4906099.

It is an arithmetic number, because the mean of its divisors is an integer number (4906099).

Almost surely, 2^9812197 is an apocalyptic number.

It is an amenable number.

9812197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9812197 is an equidigital number, since it uses as much as digits as its factorization.

9812197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 37.

The square root of 9812197 is about 3132.4426570969. The cubic root of 9812197 is about 214.0862391525.

The spelling of 9812197 in words is "nine million, eight hundred twelve thousand, one hundred ninety-seven".