16889849 has 2 divisors, whose sum is σ = 16889850. Its totient is φ = 16889848.

The previous prime is 16889839. The next prime is 16889867. The reversal of 16889849 is 94898861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10936249 + 5953600 = 3307^2 + 2440^2 .

It is an emirp because it is prime and its reverse (94898861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16889849 - 2⁴ = 16889833 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16889849.

It is not a weakly prime, because it can be changed into another prime (16889809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8444924 + 8444925.

It is an arithmetic number, because the mean of its divisors is an integer number (8444925).

Almost surely, 2^16889849 is an apocalyptic number.

It is an amenable number.

16889849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16889849 is an equidigital number, since it uses as much as digits as its factorization.

16889849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 53.

The square root of 16889849 is about 4109.7261465942. The cubic root of 16889849 is about 256.5716038202.

The spelling of 16889849 in words is "sixteen million, eight hundred eighty-nine thousand, eight hundred forty-nine".