16889223 has 32 divisors (see below), whose sum is σ = 25502400. Its totient is φ = 9870336.

The previous prime is 16889221. The next prime is 16889251. The reversal of 16889223 is 32298861.

It is a happy number.

It is not a de Polignac number, because 16889223 - 2¹ = 16889221 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16889221) 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 31 ways as a sum of consecutive naturals, for example, 123211 + ... + 123347.

It is an arithmetic number, because the mean of its divisors is an integer number (796950).

Almost surely, 2^16889223 is an apocalyptic number.

16889223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16889223 is a deficient number, since it is larger than the sum of its proper divisors (8613177).

16889223 is a wasteful number, since it uses less digits than its factorization.

16889223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its digits is 41472, while the sum is 39.

The square root of 16889223 is about 4109.6499850961. The cubic root of 16889223 is about 256.5684339516.

The spelling of 16889223 in words is "sixteen million, eight hundred eighty-nine thousand, two hundred twenty-three".