9904447 has 4 divisors (see below), whose sum is σ = 11319376. Its totient is φ = 8489520.

The previous prime is 9904441. The next prime is 9904459. The reversal of 9904447 is 7444099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9904447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904441) 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, 707454 + ... + 707467.

It is an arithmetic number, because the mean of its divisors is an integer number (2829844).

Almost surely, 2^9904447 is an apocalyptic number.

9904447 is a deficient number, since it is larger than the sum of its proper divisors (1414929).

9904447 is a wasteful number, since it uses less digits than its factorization.

9904447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414928.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 9904447 is about 3147.1331398592. The cubic root of 9904447 is about 214.7550626889.

The spelling of 9904447 in words is "nine million, nine hundred four thousand, four hundred forty-seven".