189406 has 16 divisors (see below), whose sum is σ = 330624. Its totient is φ = 79704.

The previous prime is 189401. The next prime is 189407. The reversal of 189406 is 604981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189401) by changing a digit.

189406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081 + ... + 1243.

It is an arithmetic number, because the mean of its divisors is an integer number (20664).

2¹⁸⁹⁴⁰⁶ is an apocalyptic number.

189406 is a deficient number, since it is larger than the sum of its proper divisors (141218).

189406 is a wasteful number, since it uses less digits than its factorization.

189406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 189406 is about 435.2079962501. The cubic root of 189406 is about 57.4289986897.

It can be divided in two parts, 189 and 406, that added together give a palindrome (595).

The spelling of 189406 in words is "one hundred eighty-nine thousand, four hundred six".