16989573 has 8 divisors (see below), whose sum is σ = 22690368. Its totient is φ = 11307584.

The previous prime is 16989569. The next prime is 16989593. The reversal of 16989573 is 37598961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16989573 - 2² = 16989569 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16989523) 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 7 ways as a sum of consecutive naturals, for example, 2436 + ... + 6317.

It is an arithmetic number, because the mean of its divisors is an integer number (2836296).

Almost surely, 2^16989573 is an apocalyptic number.

It is an amenable number.

16989573 is a deficient number, since it is larger than the sum of its proper divisors (5700795).

16989573 is an equidigital number, since it uses as much as digits as its factorization.

16989573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9403.

The product of its digits is 408240, while the sum is 48.

The square root of 16989573 is about 4121.8409721871. The cubic root of 16989573 is about 257.0755782099.

The spelling of 16989573 in words is "sixteen million, nine hundred eighty-nine thousand, five hundred seventy-three".