189983289 has 16 divisors (see below), whose sum is σ = 265531392. Its totient is φ = 120595728.

The previous prime is 189983267. The next prime is 189983293. The reversal of 189983289 is 982389981.

It is not a de Polignac number, because 189983289 - 2⁷ = 189983161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189983249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9214 + ... + 21560.

It is an arithmetic number, because the mean of its divisors is an integer number (16595712).

Almost surely, 2^189983289 is an apocalyptic number.

It is an amenable number.

189983289 is a deficient number, since it is larger than the sum of its proper divisors (75548103).

189983289 is a wasteful number, since it uses less digits than its factorization.

189983289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12596.

The product of its digits is 2239488, while the sum is 57.

The square root of 189983289 is about 13783.4425670803. The cubic root of 189983289 is about 574.8728530461.

The spelling of 189983289 in words is "one hundred eighty-nine million, nine hundred eighty-three thousand, two hundred eighty-nine".