189933 has 4 divisors (see below), whose sum is σ = 253248. Its totient is φ = 126620.

The previous prime is 189929. The next prime is 189947. The reversal of 189933 is 339981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 339981 = 3 ⋅113327.

It is a cyclic number.

It is not a de Polignac number, because 189933 - 2² = 189929 is a prime.

It is a D-number.

189933 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 189894 and 189903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31653 + ... + 31658.

It is an arithmetic number, because the mean of its divisors is an integer number (63312).

2¹⁸⁹⁹³³ is an apocalyptic number.

It is an amenable number.

189933 is a deficient number, since it is larger than the sum of its proper divisors (63315).

189933 is an equidigital number, since it uses as much as digits as its factorization.

189933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63314.

The product of its digits is 5832, while the sum is 33.

The square root of 189933 is about 435.8130333067. The cubic root of 189933 is about 57.4822125195.

The spelling of 189933 in words is "one hundred eighty-nine thousand, nine hundred thirty-three".