79841 has 2 divisors, whose sum is σ = 79842.
Its totient is φ = 79840.
The previous prime is 79829. The next prime is 79843. The reversal of 79841 is 14897.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 73441 + 6400 = 271^2 + 80^2
It is an emirp because it is prime and its reverse (14897) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 79841 - 26 = 79777 is a prime.
It is a Sophie Germain prime.
Together with 79843, it forms a pair of twin primes.
It is a Chen prime.
It is an Ulam number.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (79843) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39920 + 39921.
It is an arithmetic number, because the mean of its divisors is an integer number (39921).
279841 is an apocalyptic number.
It is an amenable number.
79841 is a deficient number, since it is larger than the sum of its proper divisors (1).
79841 is an equidigital number, since it uses as much as digits as its factorization.
79841 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2016, while the sum is 29.
The square root of 79841 is about 282.5614977310.
The cubic root of 79841 is about 43.0601286082.
The spelling of 79841 in words is "seventy-nine thousand, eight hundred forty-one".