8190997 has 2 divisors, whose sum is σ = 8190998. Its totient is φ = 8190996.

The previous prime is 8190983. The next prime is 8191049. The reversal of 8190997 is 7990918.

8190997 is digitally balanced in base 3, 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., 8071281 + 119716 = 2841^2 + 346^2 .

It is a cyclic number.

It is not a de Polignac number, because 8190997 - 2¹¹ = 8188949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8190907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4095498 + 4095499.

It is an arithmetic number, because the mean of its divisors is an integer number (4095499).

Almost surely, 2^8190997 is an apocalyptic number.

It is an amenable number.

8190997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8190997 is an equidigital number, since it uses as much as digits as its factorization.

8190997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 8190997 is about 2861.9917889470. The cubic root of 8190997 is about 201.5791404286.

The spelling of 8190997 in words is "eight million, one hundred ninety thousand, nine hundred ninety-seven".