6889138079 has 2 divisors, whose sum is σ = 6889138080. Its totient is φ = 6889138078.

The previous prime is 6889138063. The next prime is 6889138099. The reversal of 6889138079 is 9708319886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6889138079 - 2⁴ = 6889138063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6889138099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444569039 + 3444569040.

It is an arithmetic number, because the mean of its divisors is an integer number (3444569040).

Almost surely, 2^6889138079 is an apocalyptic number.

6889138079 is a deficient number, since it is larger than the sum of its proper divisors (1).

6889138079 is an equidigital number, since it uses as much as digits as its factorization.

6889138079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 6889138079 is about 83000.8317970368. The cubic root of 6889138079 is about 1902.7787668270.

The spelling of 6889138079 in words is "six billion, eight hundred eighty-nine million, one hundred thirty-eight thousand, seventy-nine".