16984997 has 2 divisors, whose sum is σ = 16984998. Its totient is φ = 16984996.

The previous prime is 16984987. The next prime is 16985011. The reversal of 16984997 is 79948961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10764961 + 6220036 = 3281^2 + 2494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16984997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16984927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8492498 + 8492499.

It is an arithmetic number, because the mean of its divisors is an integer number (8492499).

Almost surely, 2^16984997 is an apocalyptic number.

It is an amenable number.

16984997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16984997 is an equidigital number, since it uses as much as digits as its factorization.

16984997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 53.

The square root of 16984997 is about 4121.2858430349. The cubic root of 16984997 is about 257.0524957488.

The spelling of 16984997 in words is "sixteen million, nine hundred eighty-four thousand, nine hundred ninety-seven".