9776797049 has 2 divisors, whose sum is σ = 9776797050. Its totient is φ = 9776797048.

The previous prime is 9776797033. The next prime is 9776797127. The reversal of 9776797049 is 9407976779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8722626025 + 1054171024 = 93395^2 + 32468^2 .

It is a cyclic number.

It is not a de Polignac number, because 9776797049 - 2⁴ = 9776797033 is a prime.

It is not a weakly prime, because it can be changed into another prime (9776797649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4888398524 + 4888398525.

It is an arithmetic number, because the mean of its divisors is an integer number (4888398525).

Almost surely, 2^9776797049 is an apocalyptic number.

It is an amenable number.

9776797049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9776797049 is an equidigital number, since it uses as much as digits as its factorization.

9776797049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42007896, while the sum is 65.

The square root of 9776797049 is about 98877.6873161989. The cubic root of 9776797049 is about 2138.2847239426.

The spelling of 9776797049 in words is "nine billion, seven hundred seventy-six million, seven hundred ninety-seven thousand, forty-nine".