6844502440 has 72 divisors (see below), whose sum is σ = 15674511690. Its totient is φ = 2689872192.

The previous prime is 6844502429. The next prime is 6844502459. The reversal of 6844502440 is 442054486.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6160052196 + 684450244 = 78486^2 + 26162^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6844502440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 53893657 + ... + 53893783.

Almost surely, 2^6844502440 is an apocalyptic number.

It is an amenable number.

6844502440 is an abundant number, since it is smaller than the sum of its proper divisors (8830009250).

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

6844502440 is a wasteful number, since it uses less digits than its factorization.

6844502440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 37.

The square root of 6844502440 is about 82731.5081453251. The cubic root of 6844502440 is about 1898.6604075447.

The spelling of 6844502440 in words is "six billion, eight hundred forty-four million, five hundred two thousand, four hundred forty".