6389934140 has 24 divisors (see below), whose sum is σ = 13420384992. Its totient is φ = 2555683520.

The previous prime is 6389934139. The next prime is 6389934163. The reversal of 6389934140 is 414399836.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 290945 + ... + 312135.

It is an arithmetic number, because the mean of its divisors is an integer number (559182708).

Almost surely, 2^6389934140 is an apocalyptic number.

It is an amenable number.

6389934140 is an abundant number, since it is smaller than the sum of its proper divisors (7030450852).

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

6389934140 is a wasteful number, since it uses less digits than its factorization.

6389934140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36277 (or 36275 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 6389934140 is about 79937.0636188245. The cubic root of 6389934140 is about 1855.6616563779.

The spelling of 6389934140 in words is "six billion, three hundred eighty-nine million, nine hundred thirty-four thousand, one hundred forty".