789019219997 has 2 divisors, whose sum is σ = 789019219998. Its totient is φ = 789019219996.

The previous prime is 789019219943. The next prime is 789019220047. The reversal of 789019219997 is 799912910987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786309601081 + 2709618916 = 886741^2 + 52054^2 .

It is a cyclic number.

It is not a de Polignac number, because 789019219997 - 2¹⁰ = 789019218973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 789019219997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (789019219927) 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, 394509609998 + 394509609999.

It is an arithmetic number, because the mean of its divisors is an integer number (394509609999).

Almost surely, 2^789019219997 is an apocalyptic number.

It is an amenable number.

789019219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

789019219997 is an equidigital number, since it uses as much as digits as its factorization.

789019219997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46294416, while the sum is 71.

The spelling of 789019219997 in words is "seven hundred eighty-nine billion, nineteen million, two hundred nineteen thousand, nine hundred ninety-seven".