9909444 has 24 divisors (see below), whose sum is σ = 23416960. Its totient is φ = 3261024.

The previous prime is 9909443. The next prime is 9909457. The reversal of 9909444 is 4449099.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9909443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4279 + ... + 6174.

Almost surely, 2^9909444 is an apocalyptic number.

It is an amenable number.

9909444 is an abundant number, since it is smaller than the sum of its proper divisors (13507516).

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

9909444 is a wasteful number, since it uses less digits than its factorization.

9909444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10539 (or 10537 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 9909444 is about 3147.9269368904. The cubic root of 9909444 is about 214.7911727522.

The spelling of 9909444 in words is "nine million, nine hundred nine thousand, four hundred forty-four".