798381979 has 4 divisors (see below), whose sum is σ = 808488160. Its totient is φ = 788275800.

The previous prime is 798381973. The next prime is 798382009. The reversal of 798381979 is 979183897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979183897 = 2213 ⋅442469.

It is a cyclic number.

It is not a de Polignac number, because 798381979 - 2⁷ = 798381851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798381973) 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 3 ways as a sum of consecutive naturals, for example, 5052972 + ... + 5053129.

It is an arithmetic number, because the mean of its divisors is an integer number (202122040).

Almost surely, 2^798381979 is an apocalyptic number.

798381979 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

798381979 is a deficient number, since it is larger than the sum of its proper divisors (10106181).

798381979 is a wasteful number, since it uses less digits than its factorization.

798381979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10106180.

The product of its digits is 6858432, while the sum is 61.

The square root of 798381979 is about 28255.6539297890. The cubic root of 798381979 is about 927.6914952986.

The spelling of 798381979 in words is "seven hundred ninety-eight million, three hundred eighty-one thousand, nine hundred seventy-nine".