9944521 has 4 divisors (see below), whose sum is σ = 10265344. Its totient is φ = 9623700.

The previous prime is 9944513. The next prime is 9944531. The reversal of 9944521 is 1254499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1254499 = 71 ⋅17669.

It is a cyclic number.

It is not a de Polignac number, because 9944521 - 2³ = 9944513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9944531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160365 + ... + 160426.

It is an arithmetic number, because the mean of its divisors is an integer number (2566336).

Almost surely, 2^9944521 is an apocalyptic number.

It is an amenable number.

9944521 is a deficient number, since it is larger than the sum of its proper divisors (320823).

9944521 is a wasteful number, since it uses less digits than its factorization.

9944521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320822.

The product of its digits is 12960, while the sum is 34.

The square root of 9944521 is about 3153.4934596412. The cubic root of 9944521 is about 215.0443103192.

The spelling of 9944521 in words is "nine million, nine hundred forty-four thousand, five hundred twenty-one".