9939039636 has 48 divisors (see below), whose sum is σ = 23729731200. Its totient is φ = 3236795520.

The previous prime is 9939039623. The next prime is 9939039637. The reversal of 9939039636 is 6369309399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939039637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63505 + ... + 154631.

It is an arithmetic number, because the mean of its divisors is an integer number (494369400).

Almost surely, 2^9939039636 is an apocalyptic number.

It is an amenable number.

9939039636 is an abundant number, since it is smaller than the sum of its proper divisors (13790691564).

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

9939039636 is a wasteful number, since it uses less digits than its factorization.

9939039636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91344 (or 91342 counting only the distinct ones).

The product of its (nonzero) digits is 6377292, while the sum is 57.

The square root of 9939039636 is about 99694.7322379673. The cubic root of 9939039636 is about 2150.0479265321.

The spelling of 9939039636 in words is "nine billion, nine hundred thirty-nine million, thirty-nine thousand, six hundred thirty-six".