8947646463 has 16 divisors (see below), whose sum is σ = 13635950336. Its totient is φ = 5112400320.

The previous prime is 8947646453. The next prime is 8947646473. The reversal of 8947646463 is 3646467498.

It is a Cunningham number, because it is equal to 94592²-1.

It is an interprime number because it is at equal distance from previous prime (8947646453) and next prime (8947646473).

It is not a de Polignac number, because 8947646463 - 2⁴ = 8947646447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8947646453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268008 + ... + 299538.

It is an arithmetic number, because the mean of its divisors is an integer number (852246896).

Almost surely, 2^8947646463 is an apocalyptic number.

8947646463 is a deficient number, since it is larger than the sum of its proper divisors (4688303873).

8947646463 is a wasteful number, since it uses less digits than its factorization.

8947646463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45054.

The product of its digits is 20901888, while the sum is 57.

The square root of 8947646463 is about 94591.9999947141. Note that the first 5 decimals coincide. The cubic root of 8947646463 is about 2076.0426530806.

The spelling of 8947646463 in words is "eight billion, nine hundred forty-seven million, six hundred forty-six thousand, four hundred sixty-three".