8849717721 has 32 divisors (see below), whose sum is σ = 14145326720. Its totient is φ = 5435906112.

The previous prime is 8849717699. The next prime is 8849717731. The reversal of 8849717721 is 1277179488.

8849717721 is a `hidden beast` number, since 88 + 497 + 1 + 7 + 72 + 1 = 666.

8849717721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8849717721 - 2⁵ = 8849717689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8849717731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168951 + ... + 215043.

It is an arithmetic number, because the mean of its divisors is an integer number (442041460).

Almost surely, 2^8849717721 is an apocalyptic number.

It is an amenable number.

8849717721 is a deficient number, since it is larger than the sum of its proper divisors (5295608999).

8849717721 is a wasteful number, since it uses less digits than its factorization.

8849717721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46662 (or 46656 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 54.

The square root of 8849717721 is about 94072.9383032124. The cubic root of 8849717721 is about 2068.4410084768.

The spelling of 8849717721 in words is "eight billion, eight hundred forty-nine million, seven hundred seventeen thousand, seven hundred twenty-one".