8063999947 has 2 divisors, whose sum is σ = 8063999948. Its totient is φ = 8063999946.

The previous prime is 8063999897. The next prime is 8064000013. The reversal of 8063999947 is 7499993608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8063999947 - 2⁷ = 8063999819 is a prime.

It is not a weakly prime, because it can be changed into another prime (8063997947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4031999973 + 4031999974.

It is an arithmetic number, because the mean of its divisors is an integer number (4031999974).

Almost surely, 2^8063999947 is an apocalyptic number.

8063999947 is a deficient number, since it is larger than the sum of its proper divisors (1).

8063999947 is an equidigital number, since it uses as much as digits as its factorization.

8063999947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26453952, while the sum is 64.

The square root of 8063999947 is about 89799.7769874736. The cubic root of 8063999947 is about 2005.3191695926.

The spelling of 8063999947 in words is "eight billion, sixty-three million, nine hundred ninety-nine thousand, nine hundred forty-seven".