8490195997 has 2 divisors, whose sum is σ = 8490195998. Its totient is φ = 8490195996.

The previous prime is 8490195937. The next prime is 8490196003. The reversal of 8490195997 is 7995910948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6804765081 + 1685430916 = 82491^2 + 41054^2 .

It is a cyclic number.

It is not a de Polignac number, because 8490195997 - 2¹⁹ = 8489671709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8490195937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245097998 + 4245097999.

It is an arithmetic number, because the mean of its divisors is an integer number (4245097999).

Almost surely, 2^8490195997 is an apocalyptic number.

It is an amenable number.

8490195997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8490195997 is an equidigital number, since it uses as much as digits as its factorization.

8490195997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 61.

The square root of 8490195997 is about 92142.2595609637. The cubic root of 8490195997 is about 2040.0426106856.

The spelling of 8490195997 in words is "eight billion, four hundred ninety million, one hundred ninety-five thousand, nine hundred ninety-seven".