16969289 has 2 divisors, whose sum is σ = 16969290. Its totient is φ = 16969288.

The previous prime is 16969243. The next prime is 16969301. The reversal of 16969289 is 98296961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16949689 + 19600 = 4117^2 + 140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16969289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16969189) 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, 8484644 + 8484645.

It is an arithmetic number, because the mean of its divisors is an integer number (8484645).

Almost surely, 2^16969289 is an apocalyptic number.

It is an amenable number.

16969289 is a deficient number, since it is larger than the sum of its proper divisors (1).

16969289 is an equidigital number, since it uses as much as digits as its factorization.

16969289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 50.

The square root of 16969289 is about 4119.3796863120. The cubic root of 16969289 is about 256.9732292059.

The spelling of 16969289 in words is "sixteen million, nine hundred sixty-nine thousand, two hundred eighty-nine".