9772908091 has 2 divisors, whose sum is σ = 9772908092. Its totient is φ = 9772908090.

The previous prime is 9772908083. The next prime is 9772908113. The reversal of 9772908091 is 1908092779.

9772908091 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9772908091 - 2³ = 9772908083 is a prime.

It is not a weakly prime, because it can be changed into another prime (9772908491) 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, 4886454045 + 4886454046.

It is an arithmetic number, because the mean of its divisors is an integer number (4886454046).

Almost surely, 2^9772908091 is an apocalyptic number.

9772908091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9772908091 is an equidigital number, since it uses as much as digits as its factorization.

9772908091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 9772908091 is about 98858.0198618200. The cubic root of 9772908091 is about 2138.0011681497.

The spelling of 9772908091 in words is "nine billion, seven hundred seventy-two million, nine hundred eight thousand, ninety-one".