6439459104 has 144 divisors (see below), whose sum is σ = 20881099512. Its totient is φ = 1864802304.

The previous prime is 6439459079. The next prime is 6439459123. The reversal of 6439459104 is 4019549346.

6439459104 is a `hidden beast` number, since 64 + 39 + 459 + 104 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6408322704 + 31136400 = 80052^2 + 5580^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 6439459104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13062 + ... + 114234.

Almost surely, 2^6439459104 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 6439459104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10440549756).

6439459104 is an abundant number, since it is smaller than the sum of its proper divisors (14441640408).

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

6439459104 is a wasteful number, since it uses less digits than its factorization.

6439459104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101219 (or 101208 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6439459104 is about 80246.2404353001. The cubic root of 6439459104 is about 1860.4434045210.

The spelling of 6439459104 in words is "six billion, four hundred thirty-nine million, four hundred fifty-nine thousand, one hundred four".