9847142609 has 2 divisors, whose sum is σ = 9847142610. Its totient is φ = 9847142608.

The previous prime is 9847142573. The next prime is 9847142621. The reversal of 9847142609 is 9062417489.

9847142609 is digitally balanced in base 3, 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., 9246745600 + 600397009 = 96160^2 + 24503^2 .

It is an emirp because it is prime and its reverse (9062417489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9847142609 - 2³² = 5552175313 is a prime.

It is not a weakly prime, because it can be changed into another prime (9847142639) 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 as a sum of consecutive naturals, namely, 4923571304 + 4923571305.

It is an arithmetic number, because the mean of its divisors is an integer number (4923571305).

Almost surely, 2^9847142609 is an apocalyptic number.

It is an amenable number.

9847142609 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847142609 is an equidigital number, since it uses as much as digits as its factorization.

9847142609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 9847142609 is about 99232.7698343647. The cubic root of 9847142609 is about 2143.4009021948.

The spelling of 9847142609 in words is "nine billion, eight hundred forty-seven million, one hundred forty-two thousand, six hundred nine".