9929385612 has 36 divisors (see below), whose sum is σ = 25239516120. Its totient is φ = 3291302592.

The previous prime is 9929385577. The next prime is 9929385623. The reversal of 9929385612 is 2165839299.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×9929385612² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 763993 + ... + 776880.

It is an arithmetic number, because the mean of its divisors is an integer number (701097670).

Almost surely, 2^9929385612 is an apocalyptic number.

It is an amenable number.

9929385612 is an abundant number, since it is smaller than the sum of its proper divisors (15310130508).

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

9929385612 is a wasteful number, since it uses less digits than its factorization.

9929385612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541062 (or 1541057 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 9929385612 is about 99646.3025505713. The cubic root of 9929385612 is about 2149.3515702396.

The spelling of 9929385612 in words is "nine billion, nine hundred twenty-nine million, three hundred eighty-five thousand, six hundred twelve".