79843 has 2 divisors, whose sum is σ = 79844.
Its totient is φ = 79842.
The previous prime is 79841. The next prime is 79847. The reversal of 79843 is 34897.
It is a happy number.
It is a weak prime.
It is an emirp because it is prime and its reverse (34897) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 79843 - 21 = 79841 is a prime.
Together with 79841, it forms a pair of twin primes.
It is an Ulam number.
It is a d-powerful number, because it can be written as 73 + 95 + 83 + 44 + 39 .
It is a plaindrome in base 15.
It is not a weakly prime, because it can be changed into another prime (79841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39921 + 39922.
It is an arithmetic number, because the mean of its divisors is an integer number (39922).
279843 is an apocalyptic number.
79843 is a deficient number, since it is larger than the sum of its proper divisors (1).
79843 is an equidigital number, since it uses as much as digits as its factorization.
79843 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6048, while the sum is 31.
The square root of 79843 is about 282.5650367615.
The cubic root of 79843 is about 43.0604881542.
It can be divided in two parts, 798 and 43, that added together give a square (841 = 292).
The spelling of 79843 in words is "seventy-nine thousand, eight hundred forty-three".