6939438888 has 16 divisors (see below), whose sum is σ = 17348597280. Its totient is φ = 2313146288.

The previous prime is 6939438881. The next prime is 6939438923. The reversal of 6939438888 is 8888349396.

It is not an unprimeable number, because it can be changed into a prime (6939438881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144571620 + ... + 144571667.

It is an arithmetic number, because the mean of its divisors is an integer number (1084287330).

Almost surely, 2^6939438888 is an apocalyptic number.

It is an amenable number.

6939438888 is an abundant number, since it is smaller than the sum of its proper divisors (10409158392).

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

6939438888 is a wasteful number, since it uses less digits than its factorization.

6939438888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289143296 (or 289143292 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 66.

The square root of 6939438888 is about 83303.2945807067. The cubic root of 6939438888 is about 1907.3985662008.

The spelling of 6939438888 in words is "six billion, nine hundred thirty-nine million, four hundred thirty-eight thousand, eight hundred eighty-eight".