9940385712 has 40 divisors (see below), whose sum is σ = 26305660080. Its totient is φ = 3232645120.

The previous prime is 9940385711. The next prime is 9940385729. The reversal of 9940385712 is 2175830499.

It is a super-2 number, since 2×9940385712² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (9940385711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2523537 + ... + 2527472.

It is an arithmetic number, because the mean of its divisors is an integer number (657641502).

Almost surely, 2^9940385712 is an apocalyptic number.

It is an amenable number.

9940385712 is an abundant number, since it is smaller than the sum of its proper divisors (16365274368).

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

9940385712 is a wasteful number, since it uses less digits than its factorization.

9940385712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5051061 (or 5051055 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 9940385712 is about 99701.4829979976. The cubic root of 9940385712 is about 2150.1449847784.

The spelling of 9940385712 in words is "nine billion, nine hundred forty million, three hundred eighty-five thousand, seven hundred twelve".