8440443 has 20 divisors (see below), whose sum is σ = 13756248. Its totient is φ = 5114880.

The previous prime is 8440441. The next prime is 8440457. The reversal of 8440443 is 3440448.

It is not a de Polignac number, because 8440443 - 2¹ = 8440441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8440441) 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 19 ways as a sum of consecutive naturals, for example, 3846 + ... + 5627.

Almost surely, 2^8440443 is an apocalyptic number.

8440443 is a deficient number, since it is larger than the sum of its proper divisors (5315805).

8440443 is a wasteful number, since it uses less digits than its factorization.

8440443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496 (or 9487 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 8440443 is about 2905.2440517106. The cubic root of 8440443 is about 203.6049882148.

The spelling of 8440443 in words is "eight million, four hundred forty thousand, four hundred forty-three".