10009443 has 4 divisors (see below), whose sum is σ = 13345928. Its totient is φ = 6672960.

The previous prime is 10009423. The next prime is 10009459. The reversal of 10009443 is 34490001.

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

It is not a de Polignac number, because 10009443 - 2¹⁰ = 10008419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10009423) 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, 1668238 + ... + 1668243.

It is an arithmetic number, because the mean of its divisors is an integer number (3336482).

Almost surely, 2^10009443 is an apocalyptic number.

10009443 is a deficient number, since it is larger than the sum of its proper divisors (3336485).

10009443 is an equidigital number, since it uses as much as digits as its factorization.

10009443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336484.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 10009443 is about 3163.7703772556. The cubic root of 10009443 is about 215.5112620913.

Adding to 10009443 its reverse (34490001), we get a palindrome (44499444).

The spelling of 10009443 in words is "ten million, nine thousand, four hundred forty-three".