9477984689 has 2 divisors, whose sum is σ = 9477984690. Its totient is φ = 9477984688.

The previous prime is 9477984599. The next prime is 9477984701. The reversal of 9477984689 is 9864897749.

9477984689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9162318400 + 315666289 = 95720^2 + 17767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9477984689 is a prime.

It is not a weakly prime, because it can be changed into another prime (9477980689) 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, 4738992344 + 4738992345.

It is an arithmetic number, because the mean of its divisors is an integer number (4738992345).

Almost surely, 2^9477984689 is an apocalyptic number.

It is an amenable number.

9477984689 is a deficient number, since it is larger than the sum of its proper divisors (1).

9477984689 is an equidigital number, since it uses as much as digits as its factorization.

9477984689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219469824, while the sum is 71.

The square root of 9477984689 is about 97354.9417800658. The cubic root of 9477984689 is about 2116.2745096488.

The spelling of 9477984689 in words is "nine billion, four hundred seventy-seven million, nine hundred eighty-four thousand, six hundred eighty-nine".