13779 has 6 divisors (see below), whose sum is σ = 19916.
Its totient is φ = 9180.
The previous prime is 13763. The next prime is 13781. The reversal of 13779 is 97731.
13779 is nontrivially palindromic in base 8.
It is not a de Polignac number, because 13779 - 24 = 13763 is a prime.
It is a Duffinian number.
It is a plaindrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (13709) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 757 + ... + 774.
213779 is an apocalyptic number.
13779 is a deficient number, since it is larger than the sum of its proper divisors (6137).
13779 is a wasteful number, since it uses less digits than its factorization.
13779 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1537 (or 1534 counting only the distinct ones).
The product of its digits is 1323, while the sum is 27.
The square root of 13779 is about 117.3839852791.
The cubic root of 13779 is about 23.9739300251.
It can be divided in two parts, 137 and 79, that added together give a cube (216 = 63).
The spelling of 13779 in words is "thirteen thousand, seven hundred seventy-nine".