6988968839 has 2 divisors, whose sum is σ = 6988968840. Its totient is φ = 6988968838.

The previous prime is 6988968781. The next prime is 6988968869. The reversal of 6988968839 is 9388698896.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6988968839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6988968869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494484419 + 3494484420.

It is an arithmetic number, because the mean of its divisors is an integer number (3494484420).

Almost surely, 2^6988968839 is an apocalyptic number.

6988968839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6988968839 is an equidigital number, since it uses as much as digits as its factorization.

6988968839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322486272, while the sum is 74.

The square root of 6988968839 is about 83600.0528648158. The cubic root of 6988968839 is about 1911.9258043802.

The spelling of 6988968839 in words is "six billion, nine hundred eighty-eight million, nine hundred sixty-eight thousand, eight hundred thirty-nine".