7986197 has 2 divisors, whose sum is σ = 7986198. Its totient is φ = 7986196.

The previous prime is 7986179. The next prime is 7986203. The reversal of 7986197 is 7916897.

Together with previous prime (7986179) 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., 7447441 + 538756 = 2729^2 + 734^2 .

7986197 is a truncatable prime.

It is an emirp because it is prime and its reverse (7916897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7986197 - 2⁶ = 7986133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7986697) 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, 3993098 + 3993099.

It is an arithmetic number, because the mean of its divisors is an integer number (3993099).

Almost surely, 2^7986197 is an apocalyptic number.

It is an amenable number.

7986197 is a deficient number, since it is larger than the sum of its proper divisors (1).

7986197 is an equidigital number, since it uses as much as digits as its factorization.

7986197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 7986197 is about 2825.9860226123. The cubic root of 7986197 is about 199.8849087828.

The spelling of 7986197 in words is "seven million, nine hundred eighty-six thousand, one hundred ninety-seven".