9847727161 has 2 divisors, whose sum is σ = 9847727162. Its totient is φ = 9847727160.

The previous prime is 9847727143. The next prime is 9847727167. The reversal of 9847727161 is 1617277489.

9847727161 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., 7149548025 + 2698179136 = 84555^2 + 51944^2 .

It is a cyclic number.

It is not a de Polignac number, because 9847727161 - 2⁵ = 9847727129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9847727099 and 9847727108.

It is not a weakly prime, because it can be changed into another prime (9847727167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4923863580 + 4923863581.

It is an arithmetic number, because the mean of its divisors is an integer number (4923863581).

Almost surely, 2^9847727161 is an apocalyptic number.

It is an amenable number.

9847727161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847727161 is an equidigital number, since it uses as much as digits as its factorization.

9847727161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 52.

The square root of 9847727161 is about 99235.7151483275. The cubic root of 9847727161 is about 2143.4433139732.

The spelling of 9847727161 in words is "nine billion, eight hundred forty-seven million, seven hundred twenty-seven thousand, one hundred sixty-one".