9939739712 has 56 divisors (see below), whose sum is σ = 22560783936. Its totient is φ = 4256322048.

The previous prime is 9939739703. The next prime is 9939739721. The reversal of 9939739712 is 2179379399.

It is an interprime number because it is at equal distance from previous prime (9939739703) and next prime (9939739721).

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566138 + ... + 583430.

Almost surely, 2^9939739712 is an apocalyptic number.

It is an amenable number.

9939739712 is an abundant number, since it is smaller than the sum of its proper divisors (12621044224).

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

9939739712 is a wasteful number, since it uses less digits than its factorization.

9939739712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18595 (or 18585 counting only the distinct ones).

The product of its digits is 5786802, while the sum is 59.

The square root of 9939739712 is about 99698.2432743928. The cubic root of 9939739712 is about 2150.0984063125.

The spelling of 9939739712 in words is "nine billion, nine hundred thirty-nine million, seven hundred thirty-nine thousand, seven hundred twelve".