9009782869 has 2 divisors, whose sum is σ = 9009782870. Its totient is φ = 9009782868.

The previous prime is 9009782863. The next prime is 9009782941. The reversal of 9009782869 is 9682879009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4675140625 + 4334642244 = 68375^2 + 65838^2 .

It is a cyclic number.

It is not a de Polignac number, because 9009782869 - 2³ = 9009782861 is a prime.

It is a super-2 number, since 2×9009782869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9009782861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4504891434 + 4504891435.

It is an arithmetic number, because the mean of its divisors is an integer number (4504891435).

Almost surely, 2^9009782869 is an apocalyptic number.

It is an amenable number.

9009782869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9009782869 is an equidigital number, since it uses as much as digits as its factorization.

9009782869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The square root of 9009782869 is about 94919.8760481702. The cubic root of 9009782869 is about 2080.8372237522.

The spelling of 9009782869 in words is "nine billion, nine million, seven hundred eighty-two thousand, eight hundred sixty-nine".