9775552769 has 2 divisors, whose sum is σ = 9775552770. Its totient is φ = 9775552768.

The previous prime is 9775552757. The next prime is 9775552771. The reversal of 9775552769 is 9672555779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8512461169 + 1263091600 = 92263^2 + 35540^2 .

It is a cyclic number.

It is not a de Polignac number, because 9775552769 - 2⁴ = 9775552753 is a prime.

It is a super-2 number, since 2×9775552769² (a number of 21 digits) contains 22 as substring.

Together with 9775552771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9775552729) 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 as a sum of consecutive naturals, namely, 4887776384 + 4887776385.

It is an arithmetic number, because the mean of its divisors is an integer number (4887776385).

Almost surely, 2^9775552769 is an apocalyptic number.

It is an amenable number.

9775552769 is a deficient number, since it is larger than the sum of its proper divisors (1).

9775552769 is an equidigital number, since it uses as much as digits as its factorization.

9775552769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41674500, while the sum is 62.

The square root of 9775552769 is about 98871.3950998973. The cubic root of 9775552769 is about 2138.1940078733.

The spelling of 9775552769 in words is "nine billion, seven hundred seventy-five million, five hundred fifty-two thousand, seven hundred sixty-nine".