8209197 has 24 divisors (see below), whose sum is σ = 12702560. Its totient is φ = 5093280.

The previous prime is 8209193. The next prime is 8209211. The reversal of 8209197 is 7919028.

It is a happy number.

It is not a de Polignac number, because 8209197 - 2² = 8209193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8209193) 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 in 23 ways as a sum of consecutive naturals, for example, 10038 + ... + 10824.

Almost surely, 2^8209197 is an apocalyptic number.

It is an amenable number.

8209197 is a deficient number, since it is larger than the sum of its proper divisors (4493363).

8209197 is a wasteful number, since it uses less digits than its factorization.

8209197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 8209197 is about 2865.1696284862. The cubic root of 8209197 is about 201.7283296929.

The spelling of 8209197 in words is "eight million, two hundred nine thousand, one hundred ninety-seven".