6939128808 has 24 divisors (see below), whose sum is σ = 18793474050. Its totient is φ = 2313042912.

The previous prime is 6939128761. The next prime is 6939128831. The reversal of 6939128808 is 8088219396.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5699948004 + 1239180804 = 75498^2 + 35202^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×6939128808² = 96303017228031001728, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 48188323 + ... + 48188466.

Almost surely, 2^6939128808 is an apocalyptic number.

It is an amenable number.

6939128808 is an abundant number, since it is smaller than the sum of its proper divisors (11854345242).

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

6939128808 is a wasteful number, since it uses less digits than its factorization.

6939128808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96376801 (or 96376794 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 6939128808 is about 83301.4334090356. The cubic root of 6939128808 is about 1907.3701558847.

The spelling of 6939128808 in words is "six billion, nine hundred thirty-nine million, one hundred twenty-eight thousand, eight hundred eight".