799856659039 has 2 divisors, whose sum is σ = 799856659040. Its totient is φ = 799856659038.

The previous prime is 799856658947. The next prime is 799856659127. The reversal of 799856659039 is 930956658997.

It is a strong prime.

It is an emirp because it is prime and its reverse (930956658997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 799856659039 - 2⁹ = 799856658527 is a prime.

It is a super-2 number, since 2×799856659039² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799856639039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399928329519 + 399928329520.

It is an arithmetic number, because the mean of its divisors is an integer number (399928329520).

Almost surely, 2^799856659039 is an apocalyptic number.

799856659039 is a deficient number, since it is larger than the sum of its proper divisors (1).

799856659039 is an equidigital number, since it uses as much as digits as its factorization.

799856659039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 992023200, while the sum is 76.

The spelling of 799856659039 in words is "seven hundred ninety-nine billion, eight hundred fifty-six million, six hundred fifty-nine thousand, thirty-nine".