9940917138084 has 81 divisors (see below), whose sum is σ = 26694385511521. Its totient is φ = 3118618208640.

The previous prime is 9940917138079. The next prime is 9940917138107. The reversal of 9940917138084 is 4808317190499.

The square root of 9940917138084 is 3152922.

It is a perfect power (a square), and thus also a powerful number.

9940917138084 is a `hidden beast` number, since 9 + 9 + 4 + 0 + 9 + 171 + 380 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7739468360100 + 2201448777984 = 2781990^2 + 1483728^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 321582589 + ... + 321613499.

Almost surely, 2^{9940917138084} is an apocalyptic number.

9940917138084 is the 3152922-nd square number.

It is an amenable number.

9940917138084 is an abundant number, since it is smaller than the sum of its proper divisors (16753468373437).

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

9940917138084 is an equidigital number, since it uses as much as digits as its factorization.

9940917138084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61866 (or 30933 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 9940917138084 in words is "nine trillion, nine hundred forty billion, nine hundred seventeen million, one hundred thirty-eight thousand, eighty-four".