8444540 has 24 divisors (see below), whose sum is σ = 19098240. Its totient is φ = 3117888.

The previous prime is 8444521. The next prime is 8444549. The reversal of 8444540 is 454448.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8444549) 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, 15980 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (795760).

Almost surely, 2^8444540 is an apocalyptic number.

It is an amenable number.

8444540 is an abundant number, since it is smaller than the sum of its proper divisors (10653700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8444540 is a wasteful number, since it uses less digits than its factorization.

8444540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32501 (or 32499 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 8444540 is about 2905.9490704415. The cubic root of 8444540 is about 203.6379262452.

Adding to 8444540 its reverse (454448), we get a palindrome (8898988).

The spelling of 8444540 in words is "eight million, four hundred forty-four thousand, five hundred forty".