798387096809 has 2 divisors, whose sum is σ = 798387096810. Its totient is φ = 798387096808.

The previous prime is 798387096763. The next prime is 798387096827. The reversal of 798387096809 is 908690783897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 605844289600 + 192542807209 = 778360^2 + 438797^2 .

It is a cyclic number.

It is not a de Polignac number, because 798387096809 - 2⁸ = 798387096553 is a prime.

It is a super-2 number, since 2×798387096809² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (798387096839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399193548404 + 399193548405.

It is an arithmetic number, because the mean of its divisors is an integer number (399193548405).

Almost surely, 2^798387096809 is an apocalyptic number.

It is an amenable number.

798387096809 is a deficient number, since it is larger than the sum of its proper divisors (1).

798387096809 is an equidigital number, since it uses as much as digits as its factorization.

798387096809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329204736, while the sum is 74.

The spelling of 798387096809 in words is "seven hundred ninety-eight billion, three hundred eighty-seven million, ninety-six thousand, eight hundred nine".