16916443 has 4 divisors (see below), whose sum is σ = 16960320. Its totient is φ = 16872568.

The previous prime is 16916429. The next prime is 16916467. The reversal of 16916443 is 34461961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16916443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16916399 and 16916408.

It is not an unprimeable number, because it can be changed into a prime (16916413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21355 + ... + 22132.

It is an arithmetic number, because the mean of its divisors is an integer number (4240080).

Almost surely, 2^16916443 is an apocalyptic number.

16916443 is a deficient number, since it is larger than the sum of its proper divisors (43877).

16916443 is an equidigital number, since it uses as much as digits as its factorization.

16916443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43876.

The product of its digits is 15552, while the sum is 34.

The square root of 16916443 is about 4112.9603693690. The cubic root of 16916443 is about 256.7061952575.

The spelling of 16916443 in words is "sixteen million, nine hundred sixteen thousand, four hundred forty-three".