6984407678939 has 2 divisors, whose sum is σ = 6984407678940. Its totient is φ = 6984407678938.

The previous prime is 6984407678861. The next prime is 6984407679017. The reversal of 6984407678939 is 9398767044896.

It is a balanced prime because it is at equal distance from previous prime (6984407678861) and next prime (6984407679017).

It is a cyclic number.

It is not a de Polignac number, because 6984407678939 - 2⁴⁰ = 5884896051163 is a prime.

It is not a weakly prime, because it can be changed into another prime (6984407678239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492203839469 + 3492203839470.

It is an arithmetic number, because the mean of its divisors is an integer number (3492203839470).

Almost surely, 2^{6984407678939} is an apocalyptic number.

6984407678939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6984407678939 is an equidigital number, since it uses as much as digits as its factorization.

6984407678939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3950456832, while the sum is 80.

The spelling of 6984407678939 in words is "six trillion, nine hundred eighty-four billion, four hundred seven million, six hundred seventy-eight thousand, nine hundred thirty-nine".