8447902656 has 28 divisors (see below), whose sum is σ = 22351742952. Its totient is φ = 2815967488.

The previous prime is 8447902649. The next prime is 8447902663. The reversal of 8447902656 is 6562097448.

It is an interprime number because it is at equal distance from previous prime (8447902649) and next prime (8447902663).

It is a junction number, because it is equal to n+sod(n) for n = 8447902599 and 8447902608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21999555 + ... + 21999938.

It is an arithmetic number, because the mean of its divisors is an integer number (798276534).

Almost surely, 2^8447902656 is an apocalyptic number.

It is an amenable number.

8447902656 is an abundant number, since it is smaller than the sum of its proper divisors (13903840296).

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

8447902656 is a wasteful number, since it uses less digits than its factorization.

8447902656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43999508 (or 43999498 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The square root of 8447902656 is about 91912.4727988536. The cubic root of 8447902656 is about 2036.6495252180.

The spelling of 8447902656 in words is "eight billion, four hundred forty-seven million, nine hundred two thousand, six hundred fifty-six".