6888139244 has 24 divisors (see below), whose sum is σ = 13950666240. Its totient is φ = 2914690896.

The previous prime is 6888139243. The next prime is 6888139253. The reversal of 6888139244 is 4429318886.

It is not an unprimeable number, because it can be changed into a prime (6888139243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554782 + ... + 1559205.

It is an arithmetic number, because the mean of its divisors is an integer number (581277760).

Almost surely, 2^6888139244 is an apocalyptic number.

It is an amenable number.

6888139244 is an abundant number, since it is smaller than the sum of its proper divisors (7062526996).

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

6888139244 is a wasteful number, since it uses less digits than its factorization.

6888139244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114077 (or 3114075 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The square root of 6888139244 is about 82994.8145609110. The cubic root of 6888139244 is about 1902.6868030299.

The spelling of 6888139244 in words is "six billion, eight hundred eighty-eight million, one hundred thirty-nine thousand, two hundred forty-four".