6399844848 has 180 divisors, whose sum is σ = 18728377200. Its totient is φ = 2039869440.

The previous prime is 6399844819. The next prime is 6399844859. The reversal of 6399844848 is 8484489936.

6399844848 is a `hidden beast` number, since 63 + 9 + 98 + 4 + 484 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14253328 + ... + 14253776.

It is an arithmetic number, because the mean of its divisors is an integer number (104046540).

Almost surely, 2^6399844848 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 6399844848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9364188600).

6399844848 is an abundant number, since it is smaller than the sum of its proper divisors (12328532352).

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

6399844848 is a wasteful number, since it uses less digits than its factorization.

6399844848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 588 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 63.

The square root of 6399844848 is about 79999.0302941229. The cubic root of 6399844848 is about 1856.6205301616.

The spelling of 6399844848 in words is "six billion, three hundred ninety-nine million, eight hundred forty-four thousand, eight hundred forty-eight".