27479 has 2 divisors, whose sum is σ = 27480. Its totient is φ = 27478.
The previous prime is 27457. The next prime is 27481. The reversal of 27479 is 97472.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-27479 is a prime.
It is a Sophie Germain prime.
Together with 27481, it forms a pair of twin primes.
It is a Chen prime.
It is a d-powerful number, because it can be written as 23 + 7 + 46 + 75 + 94 .
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (27409) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13739 + 13740.
It is an arithmetic number, because the mean of its divisors is an integer number (13740).
227479 is an apocalyptic number.
27479 is a deficient number, since it is larger than the sum of its proper divisors (1).
27479 is an equidigital number, since it uses as much as digits as its factorization.
27479 is an evil number, because the sum of its binary digits is even.
The product of its digits is 3528, while the sum is 29.
The square root of 27479 is about 165.7679100429. The cubic root of 27479 is about 30.1763685138.
It can be divided in two parts, 274 and 79, that added together give a palindrome (353).
The spelling of 27479 in words is "twenty-seven thousand, four hundred seventy-nine".
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