9941640 has 32 divisors (see below), whose sum is σ = 29825280. Its totient is φ = 2651072.

The previous prime is 9941629. The next prime is 9941647. The reversal of 9941640 is 461499.

It is not an unprimeable number, because it can be changed into a prime (9941647) by changing a digit.

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, 41304 + ... + 41543.

It is an arithmetic number, because the mean of its divisors is an integer number (932040).

Almost surely, 2^9941640 is an apocalyptic number.

It is an amenable number.

9941640 is an abundant number, since it is smaller than the sum of its proper divisors (19883640).

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

9941640 is a wasteful number, since it uses less digits than its factorization.

9941640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82861 (or 82857 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9941640 is about 3153.0366315665. The cubic root of 9941640 is about 215.0235416803.

The spelling of 9941640 in words is "nine million, nine hundred forty-one thousand, six hundred forty".