8791126369 has 2 divisors, whose sum is σ = 8791126370. Its totient is φ = 8791126368.

The previous prime is 8791126367. The next prime is 8791126387. The reversal of 8791126369 is 9636211978.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8782126369 + 9000000 = 93713^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 8791126369 - 2¹ = 8791126367 is a prime.

It is a super-2 number, since 2×8791126369² (a number of 21 digits) contains 22 as substring.

Together with 8791126367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8791126361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4395563184 + 4395563185.

It is an arithmetic number, because the mean of its divisors is an integer number (4395563185).

Almost surely, 2^8791126369 is an apocalyptic number.

It is an amenable number.

8791126369 is a deficient number, since it is larger than the sum of its proper divisors (1).

8791126369 is an equidigital number, since it uses as much as digits as its factorization.

8791126369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 8791126369 is about 93761.0066552189. The cubic root of 8791126369 is about 2063.8660526200.

It can be divided in two parts, 879112 and 6369, that added together give a square (885481 = 941²).

The spelling of 8791126369 in words is "eight billion, seven hundred ninety-one million, one hundred twenty-six thousand, three hundred sixty-nine".