9786978747 has 24 divisors (see below), whose sum is σ = 17399074784. Its totient is φ = 5162361984.

The previous prime is 9786978701. The next prime is 9786978749. The reversal of 9786978747 is 7478796879.

It is not a de Polignac number, because 9786978747 - 2⁸ = 9786978491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9786978749) 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 23 ways as a sum of consecutive naturals, for example, 5974138 + ... + 5975775.

Almost surely, 2^9786978747 is an apocalyptic number.

9786978747 is a deficient number, since it is larger than the sum of its proper divisors (7612096037).

9786978747 is a wasteful number, since it uses less digits than its factorization.

9786978747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11949939 (or 11949936 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 72.

The square root of 9786978747 is about 98929.1602461074. The cubic root of 9786978747 is about 2139.0267466413.

The spelling of 9786978747 in words is "nine billion, seven hundred eighty-six million, nine hundred seventy-eight thousand, seven hundred forty-seven".