709842390679 has 2 divisors, whose sum is σ = 709842390680. Its totient is φ = 709842390678.

The previous prime is 709842390667. The next prime is 709842390707. The reversal of 709842390679 is 976093248907.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 709842390679 - 2³⁹ = 160086576791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 709842390679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709842390629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354921195339 + 354921195340.

It is an arithmetic number, because the mean of its divisors is an integer number (354921195340).

Almost surely, 2^709842390679 is an apocalyptic number.

709842390679 is a deficient number, since it is larger than the sum of its proper divisors (1).

709842390679 is an equidigital number, since it uses as much as digits as its factorization.

709842390679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 709842390679 in words is "seven hundred nine billion, eight hundred forty-two million, three hundred ninety thousand, six hundred seventy-nine".