8447968782 has 48 divisors (see below), whose sum is σ = 20612067840. Its totient is φ = 2477408400.

The previous prime is 8447968777. The next prime is 8447968807. The reversal of 8447968782 is 2878697448.

8447968782 is a `hidden beast` number, since 8 + 4 + 479 + 6 + 87 + 82 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 682032 + ... + 694307.

It is an arithmetic number, because the mean of its divisors is an integer number (429418080).

Almost surely, 2^8447968782 is an apocalyptic number.

8447968782 is an abundant number, since it is smaller than the sum of its proper divisors (12164099058).

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

8447968782 is a wasteful number, since it uses less digits than its factorization.

8447968782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376389 (or 1376386 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The square root of 8447968782 is about 91912.8325208183. The cubic root of 8447968782 is about 2036.6548391656.

The spelling of 8447968782 in words is "eight billion, four hundred forty-seven million, nine hundred sixty-eight thousand, seven hundred eighty-two".