16822943 has 4 divisors (see below), whose sum is σ = 16844208. Its totient is φ = 16801680.

The previous prime is 16822937. The next prime is 16822969. The reversal of 16822943 is 34922861.

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

It is a cyclic number.

It is not a de Polignac number, because 16822943 - 2¹⁶ = 16757407 is a prime.

It is a super-2 number, since 2×16822943² = 566022822362498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16822343) 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 in 3 ways as a sum of consecutive naturals, for example, 9398 + ... + 11043.

It is an arithmetic number, because the mean of its divisors is an integer number (4211052).

Almost surely, 2^16822943 is an apocalyptic number.

16822943 is a deficient number, since it is larger than the sum of its proper divisors (21265).

16822943 is an equidigital number, since it uses as much as digits as its factorization.

16822943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21264.

The product of its digits is 20736, while the sum is 35.

The square root of 16822943 is about 4101.5781109227. The cubic root of 16822943 is about 256.2323685668.

The spelling of 16822943 in words is "sixteen million, eight hundred twenty-two thousand, nine hundred forty-three".