9939712 has 36 divisors (see below), whose sum is σ = 20345976. Its totient is φ = 4843520.

The previous prime is 9939707. The next prime is 9939731. The reversal of 9939712 is 2179399.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10023 + ... + 10969.

It is an arithmetic number, because the mean of its divisors is an integer number (565166).

Almost surely, 2^9939712 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 9939712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10172988).

9939712 is an abundant number, since it is smaller than the sum of its proper divisors (10406264).

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

9939712 is an equidigital number, since it uses as much as digits as its factorization.

9939712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 990 counting only the distinct ones).

The product of its digits is 30618, while the sum is 40.

The square root of 9939712 is about 3152.7308797295. The cubic root of 9939712 is about 215.0096408152.

The spelling of 9939712 in words is "nine million, nine hundred thirty-nine thousand, seven hundred twelve".