6399339936 has 48 divisors (see below), whose sum is σ = 18325385568. Its totient is φ = 1939193600.

The previous prime is 6399339907. The next prime is 6399339941.

6399339936 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6399339936.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3028935 + ... + 3031046.

It is an arithmetic number, because the mean of its divisors is an integer number (381778866).

Almost surely, 2^6399339936 is an apocalyptic number.

6399339936 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6399339936 is an abundant number, since it is smaller than the sum of its proper divisors (11926045632).

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

6399339936 is a wasteful number, since it uses less digits than its factorization.

6399339936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060005 (or 6059997 counting only the distinct ones).

The product of its digits is 19131876, while the sum is 60.

The square root of 6399339936 is about 79995.8744936262. The cubic root of 6399339936 is about 1856.5717032154.

The spelling of 6399339936 in words is "six billion, three hundred ninety-nine million, three hundred thirty-nine thousand, nine hundred thirty-six".