16969243 has 2 divisors, whose sum is σ = 16969244. Its totient is φ = 16969242.

The previous prime is 16969241. The next prime is 16969289. The reversal of 16969243 is 34296961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16969243 - 2¹ = 16969241 is a prime.

Together with 16969241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16969196 and 16969205.

It is not a weakly prime, because it can be changed into another prime (16969241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8484621 + 8484622.

It is an arithmetic number, because the mean of its divisors is an integer number (8484622).

Almost surely, 2^16969243 is an apocalyptic number.

16969243 is a deficient number, since it is larger than the sum of its proper divisors (1).

16969243 is an equidigital number, since it uses as much as digits as its factorization.

16969243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 16969243 is about 4119.3741029433. The cubic root of 16969243 is about 256.9729970064.

The spelling of 16969243 in words is "sixteen million, nine hundred sixty-nine thousand, two hundred forty-three".