189959 has 8 divisors (see below), whose sum is σ = 236928. Its totient is φ = 147960.

The previous prime is 189949. The next prime is 189961. The reversal of 189959 is 959981.

189959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189959 is a prime.

It is a Duffinian 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.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (29616).

2¹⁸⁹⁹⁵⁹ is an apocalyptic number.

189959 is a deficient number, since it is larger than the sum of its proper divisors (46969).

189959 is a wasteful number, since it uses less digits than its factorization.

189959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485.

The product of its digits is 29160, while the sum is 41.

The square root of 189959 is about 435.8428615912. The cubic root of 189959 is about 57.4848353204.

The spelling of 189959 in words is "one hundred eighty-nine thousand, nine hundred fifty-nine".