16659239 has 2 divisors, whose sum is σ = 16659240. Its totient is φ = 16659238.

The previous prime is 16659229. The next prime is 16659259. The reversal of 16659239 is 93295661.

It is a weak prime.

It is an emirp because it is prime and its reverse (93295661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16659239 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16659196 and 16659205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16659229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8329619 + 8329620.

It is an arithmetic number, because the mean of its divisors is an integer number (8329620).

Almost surely, 2^16659239 is an apocalyptic number.

16659239 is a deficient number, since it is larger than the sum of its proper divisors (1).

16659239 is an equidigital number, since it uses as much as digits as its factorization.

16659239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 16659239 is about 4081.5731035962. The cubic root of 16659239 is about 255.3985258859.

The spelling of 16659239 in words is "sixteen million, six hundred fifty-nine thousand, two hundred thirty-nine".