8444489 has 4 divisors (see below), whose sum is σ = 8452500. Its totient is φ = 8436480.

The previous prime is 8444477. The next prime is 8444507. The reversal of 8444489 is 9844448.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5175625 + 3268864 = 2275^2 + 1808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8444489 is a prime.

It is a super-2 number, since 2×8444489² = 142618788942242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8444419) 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, 2132 + ... + 4629.

It is an arithmetic number, because the mean of its divisors is an integer number (2113125).

Almost surely, 2^8444489 is an apocalyptic number.

It is an amenable number.

8444489 is a deficient number, since it is larger than the sum of its proper divisors (8011).

8444489 is a wasteful number, since it uses less digits than its factorization.

8444489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8010.

The product of its digits is 147456, while the sum is 41.

The square root of 8444489 is about 2905.9402953261. The cubic root of 8444489 is about 203.6375162937.

Subtracting from 8444489 its sum of digits (41), we obtain a palindrome (8444448).

The spelling of 8444489 in words is "eight million, four hundred forty-four thousand, four hundred eighty-nine".