6406839530 has 32 divisors (see below), whose sum is σ = 14193615744. Its totient is φ = 2027658816.

The previous prime is 6406839503. The next prime is 6406839553. The reversal of 6406839530 is 359386046.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 15 ways as a sum of consecutive naturals, for example, 3519332 + ... + 3521151.

It is an arithmetic number, because the mean of its divisors is an integer number (443550492).

Almost surely, 2^6406839530 is an apocalyptic number.

6406839530 is an abundant number, since it is smaller than the sum of its proper divisors (7786776214).

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

6406839530 is a wasteful number, since it uses less digits than its factorization.

6406839530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040510.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 6406839530 is about 80042.7356479025. The cubic root of 6406839530 is about 1857.2966789440.

The spelling of 6406839530 in words is "six billion, four hundred six million, eight hundred thirty-nine thousand, five hundred thirty".