8797448781 has 24 divisors (see below), whose sum is σ = 14052557376. Its totient is φ = 5258744640.

The previous prime is 8797448743. The next prime is 8797448809. The reversal of 8797448781 is 1878447978.

8797448781 is a `hidden beast` number, since 8 + 7 + 9 + 74 + 487 + 81 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-8797448781 is a prime.

It is a super-2 number, since 2×8797448781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8797448701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 601425 + ... + 615878.

It is an arithmetic number, because the mean of its divisors is an integer number (585523224).

Almost surely, 2^8797448781 is an apocalyptic number.

It is an amenable number.

8797448781 is a deficient number, since it is larger than the sum of its proper divisors (5255108595).

8797448781 is a wasteful number, since it uses less digits than its factorization.

8797448781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217393 (or 1217390 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The square root of 8797448781 is about 93794.7161678098. The cubic root of 8797448781 is about 2064.3606985502.

The spelling of 8797448781 in words is "eight billion, seven hundred ninety-seven million, four hundred forty-eight thousand, seven hundred eighty-one".