9916440 has 64 divisors (see below), whose sum is σ = 31505760. Its totient is φ = 2488320.

The previous prime is 9916433. The next prime is 9916441. The reversal of 9916440 is 446199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9916441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391 + ... + 4470.

Almost surely, 2^9916440 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 9916440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15752880).

9916440 is an abundant number, since it is smaller than the sum of its proper divisors (21589320).

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

9916440 is a wasteful number, since it uses less digits than its factorization.

9916440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4892 (or 4888 counting only the distinct ones).

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

The square root of 9916440 is about 3149.0379483264. The cubic root of 9916440 is about 214.8417078968.

The spelling of 9916440 in words is "nine million, nine hundred sixteen thousand, four hundred forty".