9775838889 has 20 divisors (see below), whose sum is σ = 14624631120. Its totient is φ = 6507757080.

The previous prime is 9775838851. The next prime is 9775838911. The reversal of 9775838889 is 9888385779.

It is not a de Polignac number, because 9775838889 - 2¹¹ = 9775836841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9775831889) 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 in 19 ways as a sum of consecutive naturals, for example, 31359 + ... + 143300.

It is an arithmetic number, because the mean of its divisors is an integer number (731231556).

Almost surely, 2^9775838889 is an apocalyptic number.

It is an amenable number.

9775838889 is a deficient number, since it is larger than the sum of its proper divisors (4848792231).

9775838889 is a wasteful number, since it uses less digits than its factorization.

9775838889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175362 (or 175353 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 72.

The square root of 9775838889 is about 98872.8420194342. The cubic root of 9775838889 is about 2138.2148685556.

The spelling of 9775838889 in words is "nine billion, seven hundred seventy-five million, eight hundred thirty-eight thousand, eight hundred eighty-nine".