8909443 has 4 divisors (see below), whose sum is σ = 8920480. Its totient is φ = 8898408.

The previous prime is 8909437. The next prime is 8909449. The reversal of 8909443 is 3449098.

8909443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (8909437) and next prime (8909449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8909443 is a prime.

It is a super-3 number, since 3×8909443³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8909449) 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, 4203 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (2230120).

Almost surely, 2^8909443 is an apocalyptic number.

8909443 is a deficient number, since it is larger than the sum of its proper divisors (11037).

8909443 is a wasteful number, since it uses less digits than its factorization.

8909443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 8909443 is about 2984.8690088511. The cubic root of 8909443 is about 207.3083768263.

The spelling of 8909443 in words is "eight million, nine hundred nine thousand, four hundred forty-three".