869344971839 has 2 divisors, whose sum is σ = 869344971840. Its totient is φ = 869344971838.

The previous prime is 869344971811. The next prime is 869344971851. The reversal of 869344971839 is 938179443968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869344971839 - 2³² = 865050004543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869344901839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434672485919 + 434672485920.

It is an arithmetic number, because the mean of its divisors is an integer number (434672485920).

Almost surely, 2^869344971839 is an apocalyptic number.

869344971839 is a deficient number, since it is larger than the sum of its proper divisors (1).

869344971839 is an equidigital number, since it uses as much as digits as its factorization.

869344971839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282175488, while the sum is 71.

The spelling of 869344971839 in words is "eight hundred sixty-nine billion, three hundred forty-four million, nine hundred seventy-one thousand, eight hundred thirty-nine".