16729 has 2 divisors, whose sum is σ = 16730.
Its totient is φ = 16728.
The previous prime is 16703. The next prime is 16741. The reversal of 16729 is 92761.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 15129 + 1600 = 123^2 + 40^2
It is an emirp because it is prime and its reverse (92761) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 16729 - 29 = 16217 is a prime.
It is a d-powerful number, because it can be written as 1 + 65 + 73 + 211 + 94 .
It is an alternating number because its digits alternate between odd and even.
It is a nialpdrome in base 12.
It is not a weakly prime, because it can be changed into another prime (16759) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364 + 8365.
It is an arithmetic number, because the mean of its divisors is an integer number (8365).
216729 is an apocalyptic number.
It is an amenable number.
16729 is a deficient number, since it is larger than the sum of its proper divisors (1).
16729 is an equidigital number, since it uses as much as digits as its factorization.
16729 is an evil number, because the sum of its binary digits is even.
The product of its digits is 756, while the sum is 25.
The square root of 16729 is about 129.3406355327.
The cubic root of 16729 is about 25.5754525436.
It can be divided in two parts, 1672 and 9, that added together give a square (1681 = 412).
The spelling of 16729 in words is "sixteen thousand, seven hundred twenty-nine".