8947646473 has 2 divisors, whose sum is σ = 8947646474. Its totient is φ = 8947646472.

The previous prime is 8947646453. The next prime is 8947646527. The reversal of 8947646473 is 3746467498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8947646464 + 9 = 94592^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 8947646473 - 2⁵ = 8947646441 is a prime.

It is not a weakly prime, because it can be changed into another prime (8947646453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4473823236 + 4473823237.

It is an arithmetic number, because the mean of its divisors is an integer number (4473823237).

Almost surely, 2^8947646473 is an apocalyptic number.

It is an amenable number.

8947646473 is a deficient number, since it is larger than the sum of its proper divisors (1).

8947646473 is an equidigital number, since it uses as much as digits as its factorization.

8947646473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 58.

The square root of 8947646473 is about 94592.0000475727. Note that the first 4 decimals coincide. The cubic root of 8947646473 is about 2076.0426538540.

The spelling of 8947646473 in words is "eight billion, nine hundred forty-seven million, six hundred forty-six thousand, four hundred seventy-three".