4139 has 2 divisors, whose sum is σ = 4140.
Its totient is φ = 4138.
The previous prime is 4133. The next prime is 4153. The reversal of 4139 is 9314.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 4139 - 212 = 43 is a prime.
It is a Chen prime.
It is an iccanobiF number.
It is a plaindrome in base 12 and base 15.
It is not a weakly prime, because it can be changed into another prime (4133) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069 + 2070.
It is an arithmetic number, because the mean of its divisors is an integer number (2070).
4139 is a deficient number, since it is larger than the sum of its proper divisors (1).
4139 is an equidigital number, since it uses as much as digits as its factorization.
4139 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 108, while the sum is 17.
The square root of 4139 is about 64.3350604259.
The cubic root of 4139 is about 16.0557947910.
The spelling of 4139 in words is "four thousand, one hundred thirty-nine".