8947646464 has 45 divisors (see below), whose sum is σ = 17918994387. Its totient is φ = 4467769344.

The previous prime is 8947646453. The next prime is 8947646473. The reversal of 8947646464 is 4646467498.

The square root of 8947646464 is 94592.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8947646399 and 8947646408.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12107407 + ... + 12108145.

Almost surely, 2^8947646464 is an apocalyptic number.

8947646464 is the 94592-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8947646464

8947646464 is an abundant number, since it is smaller than the sum of its proper divisors (8971347923).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8947646464 is an frugal number, since it uses more digits than its factorization.

8947646464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 741 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 58.

The cubic root of 8947646464 is about 2076.0426531580.

The spelling of 8947646464 in words is "eight billion, nine hundred forty-seven million, six hundred forty-six thousand, four hundred sixty-four".