9905444 has 12 divisors (see below), whose sum is σ = 17446044. Its totient is φ = 4920864.

The previous prime is 9905431. The next prime is 9905447. The reversal of 9905444 is 4445099.

It can be written as a sum of positive squares in 2 ways, for example, as 4326400 + 5579044 = 2080^2 + 2362^2 .

It is not an unprimeable number, because it can be changed into a prime (9905447) 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, 7259 + ... + 8514.

It is an arithmetic number, because the mean of its divisors is an integer number (1453837).

Almost surely, 2^9905444 is an apocalyptic number.

It is an amenable number.

9905444 is a deficient number, since it is larger than the sum of its proper divisors (7540600).

9905444 is a wasteful number, since it uses less digits than its factorization.

9905444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934 (or 15932 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 9905444 is about 3147.2915340019. The cubic root of 9905444 is about 214.7622683280.

The spelling of 9905444 in words is "nine million, nine hundred five thousand, four hundred forty-four".