9944864 has 48 divisors (see below), whose sum is σ = 21051576. Its totient is φ = 4608000.

The previous prime is 9944849. The next prime is 9944917. The reversal of 9944864 is 4684499.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9120400 + 824464 = 3020^2 + 908^2 .

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 7 ways as a sum of consecutive naturals, for example, 54854 + ... + 55034.

Almost surely, 2^9944864 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 9944864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10525788).

9944864 is an abundant number, since it is smaller than the sum of its proper divisors (11106712).

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

9944864 is a wasteful number, since it uses less digits than its factorization.

9944864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 301 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 9944864 is about 3153.5478433028. The cubic root of 9944864 is about 215.0467826806.

The spelling of 9944864 in words is "nine million, nine hundred forty-four thousand, eight hundred sixty-four".