189926 has 16 divisors (see below), whose sum is σ = 317520. Its totient is φ = 84480.

The previous prime is 189913. The next prime is 189929. The reversal of 189926 is 629981.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189929) by changing a digit.

189926 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1910 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (19845).

2¹⁸⁹⁹²⁶ is an apocalyptic number.

189926 is the 356-th pentagonal number.

189926 is a deficient number, since it is larger than the sum of its proper divisors (127594).

189926 is a wasteful number, since it uses less digits than its factorization.

189926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its digits is 7776, while the sum is 35.

The square root of 189926 is about 435.8050022659. The cubic root of 189926 is about 57.4815063399.

The spelling of 189926 in words is "one hundred eighty-nine thousand, nine hundred twenty-six".