798117839 has 16 divisors (see below), whose sum is σ = 829649280. Its totient is φ = 767340000.

The previous prime is 798117829. The next prime is 798117841. The reversal of 798117839 is 938711897.

It is a cyclic number.

It is not a de Polignac number, because 798117839 - 2⁴ = 798117823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798117809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758864 + ... + 759914.

It is an arithmetic number, because the mean of its divisors is an integer number (51853080).

Almost surely, 2^798117839 is an apocalyptic number.

798117839 is a deficient number, since it is larger than the sum of its proper divisors (31531441).

798117839 is a wasteful number, since it uses less digits than its factorization.

798117839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its digits is 762048, while the sum is 53.

The square root of 798117839 is about 28250.9794343488. The cubic root of 798117839 is about 927.5891769154.

The spelling of 798117839 in words is "seven hundred ninety-eight million, one hundred seventeen thousand, eight hundred thirty-nine".