9629839940 has 24 divisors (see below), whose sum is σ = 23111616192. Its totient is φ = 3301659360.

The previous prime is 9629839937. The next prime is 9629839957. The reversal of 9629839940 is 499389269.

It is a self number, because there is not a number n which added to its sum of digits gives 9629839940.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34392146 + ... + 34392425.

It is an arithmetic number, because the mean of its divisors is an integer number (962984008).

Almost surely, 2^9629839940 is an apocalyptic number.

It is an amenable number.

9629839940 is an abundant number, since it is smaller than the sum of its proper divisors (13481776252).

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

9629839940 is a wasteful number, since it uses less digits than its factorization.

9629839940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68784587 (or 68784585 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 59.

The square root of 9629839940 is about 98131.7478698917. The cubic root of 9629839940 is about 2127.5169209964.

The spelling of 9629839940 in words is "nine billion, six hundred twenty-nine million, eight hundred thirty-nine thousand, nine hundred forty".