16889 has 2 divisors, whose sum is σ = 16890. Its totient is φ = 16888.

The previous prime is 16883. The next prime is 16901. The reversal of 16889 is 98861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10000 + 6889 = 100^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 16889 - 2⁸ = 16633 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (16883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8444 + 8445.

It is an arithmetic number, because the mean of its divisors is an integer number (8445).

2¹⁶⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

16889 is a deficient number, since it is larger than the sum of its proper divisors (1).

16889 is an equidigital number, since it uses as much as digits as its factorization.

16889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 16889 is about 129.9576854211. The cubic root of 16889 is about 25.6567304730.

The spelling of 16889 in words is "sixteen thousand, eight hundred eighty-nine".