8975775797 has 2 divisors, whose sum is σ = 8975775798. Its totient is φ = 8975775796.

The previous prime is 8975775773. The next prime is 8975775817. The reversal of 8975775797 is 7975775798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6587107921 + 2388667876 = 81161^2 + 48874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8975775797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8975775797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8975715797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4487887898 + 4487887899.

It is an arithmetic number, because the mean of its divisors is an integer number (4487887899).

Almost surely, 2^8975775797 is an apocalyptic number.

It is an amenable number.

8975775797 is a deficient number, since it is larger than the sum of its proper divisors (1).

8975775797 is an equidigital number, since it uses as much as digits as its factorization.

8975775797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272273400, while the sum is 71.

The square root of 8975775797 is about 94740.5710189674. The cubic root of 8975775797 is about 2078.2159101412.

Subtracting from 8975775797 its reverse (7975775798), we obtain a palindrome (999999999).

The spelling of 8975775797 in words is "eight billion, nine hundred seventy-five million, seven hundred seventy-five thousand, seven hundred ninety-seven".