8721999498 has 64 divisors (see below), whose sum is σ = 18708962688. Its totient is φ = 2701117440.

The previous prime is 8721999497. The next prime is 8721999511. The reversal of 8721999498 is 8949991278.

8721999498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8721999498² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8721999493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3458478 + ... + 3460998.

It is an arithmetic number, because the mean of its divisors is an integer number (292327542).

Almost surely, 2^8721999498 is an apocalyptic number.

8721999498 is an abundant number, since it is smaller than the sum of its proper divisors (9986963190).

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

8721999498 is a wasteful number, since it uses less digits than its factorization.

8721999498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967.

The product of its digits is 23514624, while the sum is 66.

The square root of 8721999498 is about 93391.6457612778. The cubic root of 8721999498 is about 2058.4422428557.

The spelling of 8721999498 in words is "eight billion, seven hundred twenty-one million, nine hundred ninety-nine thousand, four hundred ninety-eight".