8453324440 has 64 divisors (see below), whose sum is σ = 20808900000. Its totient is φ = 3065072640.

The previous prime is 8453324437. The next prime is 8453324471. The reversal of 8453324440 is 444233548.

It is a self number, because there is not a number n which added to its sum of digits gives 8453324440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126036 + ... + 181084.

Almost surely, 2^8453324440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8453324440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10404450000).

8453324440 is an abundant number, since it is smaller than the sum of its proper divisors (12355575560).

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

8453324440 is a wasteful number, since it uses less digits than its factorization.

8453324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55420 (or 55416 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

The square root of 8453324440 is about 91941.9623458190. The cubic root of 8453324440 is about 2037.0851328406.

Adding to 8453324440 its reverse (444233548), we get a palindrome (8897557988).

The spelling of 8453324440 in words is "eight billion, four hundred fifty-three million, three hundred twenty-four thousand, four hundred forty".