9914640 has 80 divisors (see below), whose sum is σ = 31099200. Its totient is φ = 2612736.

The previous prime is 9914629. The next prime is 9914659. The reversal of 9914640 is 464199.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25971 + ... + 26349.

It is an arithmetic number, because the mean of its divisors is an integer number (388740).

Almost surely, 2^9914640 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 9914640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15549600).

9914640 is an abundant number, since it is smaller than the sum of its proper divisors (21184560).

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

9914640 is a wasteful number, since it uses less digits than its factorization.

9914640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 498 counting only the distinct ones).

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

The square root of 9914640 is about 3148.7521337825. The cubic root of 9914640 is about 214.8287079871.

The spelling of 9914640 in words is "nine million, nine hundred fourteen thousand, six hundred forty".