9944840 has 16 divisors (see below), whose sum is σ = 22375980. Its totient is φ = 3977920.

The previous prime is 9944839. The next prime is 9944843. The reversal of 9944840 is 484499.

It can be written as a sum of positive squares in 2 ways, for example, as 9897316 + 47524 = 3146^2 + 218^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9944794 and 9944803.

It is not an unprimeable number, because it can be changed into a prime (9944843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 124271 + ... + 124350.

Almost surely, 2^9944840 is an apocalyptic number.

It is an amenable number.

9944840 is an abundant number, since it is smaller than the sum of its proper divisors (12431140).

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

9944840 is a wasteful number, since it uses less digits than its factorization.

9944840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248632 (or 248628 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 9944840 is about 3153.5440380626. The cubic root of 9944840 is about 215.0466096893.

The spelling of 9944840 in words is "nine million, nine hundred forty-four thousand, eight hundred forty".