8706439872 has 560 divisors, whose sum is σ = 29926556352. Its totient is φ = 2481684480.

The previous prime is 8706439871. The next prime is 8706439909. The reversal of 8706439872 is 2789346078.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8706439871) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 63550588 + ... + 63550724.

Almost surely, 2^8706439872 is an apocalyptic number.

8706439872 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8706439872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14963278176).

8706439872 is an abundant number, since it is smaller than the sum of its proper divisors (21220116480).

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

8706439872 is a wasteful number, since it uses less digits than its factorization.

8706439872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 8706439872 is about 93308.3054824167. The cubic root of 8706439872 is about 2057.2174603897.

The spelling of 8706439872 in words is "eight billion, seven hundred six million, four hundred thirty-nine thousand, eight hundred seventy-two".