9940140 has 180 divisors, whose sum is σ = 36704304. Its totient is φ = 2173248.

The previous prime is 9940129. The next prime is 9940199. The reversal of 9940140 is 410499.

It is a tau number, because it is divible by the number of its divisors (180).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 432169 + ... + 432191.

Almost surely, 2^9940140 is an apocalyptic number.

9940140 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9940140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18352152).

9940140 is an abundant number, since it is smaller than the sum of its proper divisors (26764164).

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

9940140 is a wasteful number, since it uses less digits than its factorization.

9940140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 9940140 is about 3152.7987566605. The cubic root of 9940140 is about 215.0127268471.

The spelling of 9940140 in words is "nine million, nine hundred forty thousand, one hundred forty".