9999447 has 8 divisors (see below), whose sum is σ = 13349760. Its totient is φ = 6657720.

The previous prime is 9999433. The next prime is 9999463. The reversal of 9999447 is 7449999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9999447 - 2¹⁰ = 9998423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9999447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999047) 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, 1422 + ... + 4692.

It is an arithmetic number, because the mean of its divisors is an integer number (1668720).

Almost surely, 2^9999447 is an apocalyptic number.

9999447 is a deficient number, since it is larger than the sum of its proper divisors (3350313).

9999447 is a wasteful number, since it uses less digits than its factorization.

9999447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293.

The product of its digits is 734832, while the sum is 51.

The square root of 9999447 is about 3162.1902219822. The cubic root of 9999447 is about 215.4394975887.

The spelling of 9999447 in words is "nine million, nine hundred ninety-nine thousand, four hundred forty-seven".