8729649936 has 200 divisors, whose sum is σ = 29284447104. Its totient is φ = 2458874880.

The previous prime is 8729649847. The next prime is 8729649953. The reversal of 8729649936 is 6399469278.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 637336 + ... + 650888.

Almost surely, 2^8729649936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8729649936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14642223552).

8729649936 is an abundant number, since it is smaller than the sum of its proper divisors (20554797168).

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

8729649936 is a wasteful number, since it uses less digits than its factorization.

8729649936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13651 (or 13636 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The square root of 8729649936 is about 93432.5956826631. The cubic root of 8729649936 is about 2059.0439161528.

The spelling of 8729649936 in words is "eight billion, seven hundred twenty-nine million, six hundred forty-nine thousand, nine hundred thirty-six".