9940917140 has 108 divisors (see below), whose sum is σ = 26692913268. Its totient is φ = 3098430720.

The previous prime is 9940917137. The next prime is 9940917197. The reversal of 9940917140 is 417190499.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4223440144 + 5717476996 = 64988^2 + 75614^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 9940917091 and 9940917100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76664 + ... + 160496.

Almost surely, 2^9940917140 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 9940917140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13346456634).

9940917140 is an abundant number, since it is smaller than the sum of its proper divisors (16751996128).

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

9940917140 is a wasteful number, since it uses less digits than its factorization.

9940917140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83878 (or 83858 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 9940917140 is about 99704.1480581425. The cubic root of 9940917140 is about 2150.1833007593.

The spelling of 9940917140 in words is "nine billion, nine hundred forty million, nine hundred seventeen thousand, one hundred forty".