9939028712 has 32 divisors (see below), whose sum is σ = 19688486400. Its totient is φ = 4696058304.

The previous prime is 9939028657. The next prime is 9939028721. The reversal of 9939028712 is 2178209399.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444848 + ... + 466655.

It is an arithmetic number, because the mean of its divisors is an integer number (615265200).

Almost surely, 2^9939028712 is an apocalyptic number.

It is an amenable number.

9939028712 is a deficient number, since it is larger than the sum of its proper divisors (9749457688).

9939028712 is a wasteful number, since it uses less digits than its factorization.

9939028712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911585 (or 911581 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 9939028712 is about 99694.6774507045. The cubic root of 9939028712 is about 2150.0471388259.

The spelling of 9939028712 in words is "nine billion, nine hundred thirty-nine million, twenty-eight thousand, seven hundred twelve".