• 179 can be written using four 4's:
179 has 2 divisors, whose sum is σ = 180. Its totient is φ = 178.
The previous prime is 173. The next prime is 181. The reversal of 179 is 971.
179 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.
It is a strong prime.
It is an emirp because it is prime and its reverse (971) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 179 - 24 = 163 is a prime.
It is a Sophie Germain prime.
Together with 181, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 6, base 7, base 10, base 12 and base 15.
It is a nialpdrome in base 14 and base 16.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89 + 90.
It is an arithmetic number, because the mean of its divisors is an integer number (90).
179 is a deficient number, since it is larger than the sum of its proper divisors (1).
179 is an equidigital number, since it uses as much as digits as its factorization.
179 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 63, while the sum is 17.
The square root of 179 is about 13.3790881603. The cubic root of 179 is about 5.6357407945.
Adding to 179 its sum of digits (17), we get a square (196 = 142).
Adding to 179 its product of digits (63), we get a palindrome (242).
It can be divided in two parts, 17 and 9, that multiplied together give a triangular number (153 = T17).
The spelling of 179 in words is "one hundred seventy-nine", and thus it is an aban number.
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