6709443779 has 2 divisors, whose sum is σ = 6709443780. Its totient is φ = 6709443778.

The previous prime is 6709443691. The next prime is 6709443821. The reversal of 6709443779 is 9773449076.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6709443779 - 2²⁸ = 6441008323 is a prime.

It is not a weakly prime, because it can be changed into another prime (6709443079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3354721889 + 3354721890.

It is an arithmetic number, because the mean of its divisors is an integer number (3354721890).

Almost surely, 2^6709443779 is an apocalyptic number.

6709443779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6709443779 is an equidigital number, since it uses as much as digits as its factorization.

6709443779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8001504, while the sum is 56.

The square root of 6709443779 is about 81911.1944669347. The cubic root of 6709443779 is about 1886.0889587940.

It can be divided in two parts, 670 and 9443779, that added together give a palindrome (9444449).

The spelling of 6709443779 in words is "six billion, seven hundred nine million, four hundred forty-three thousand, seven hundred seventy-nine".