189906 has 16 divisors (see below), whose sum is σ = 392448. Its totient is φ = 61200.

The previous prime is 189901. The next prime is 189913. The reversal of 189906 is 609981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (189901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (24528).

2¹⁸⁹⁹⁰⁶ is an apocalyptic number.

189906 is an abundant number, since it is smaller than the sum of its proper divisors (202542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189906 is a wasteful number, since it uses less digits than its factorization.

189906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 189906 is about 435.7820556195. The cubic root of 189906 is about 57.4794885883.

The spelling of 189906 in words is "one hundred eighty-nine thousand, nine hundred six".