6384239840 has 192 divisors, whose sum is σ = 17498799360. Its totient is φ = 2175344640.

The previous prime is 6384239839. The next prime is 6384239863. The reversal of 6384239840 is 489324836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11339399 + ... + 11339961.

It is an arithmetic number, because the mean of its divisors is an integer number (91139580).

Almost surely, 2^6384239840 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 6384239840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8749399680).

6384239840 is an abundant number, since it is smaller than the sum of its proper divisors (11114559520).

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

6384239840 is a wasteful number, since it uses less digits than its factorization.

6384239840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The square root of 6384239840 is about 79901.4382849270. The cubic root of 6384239840 is about 1855.1102769594.

The spelling of 6384239840 in words is "six billion, three hundred eighty-four million, two hundred thirty-nine thousand, eight hundred forty".