189893 has 8 divisors (see below), whose sum is σ = 211296. Its totient is φ = 169200.

The previous prime is 189887. The next prime is 189901. The reversal of 189893 is 398981.

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

It is a cyclic number.

It is not a de Polignac number, because 189893 - 2⁴ = 189877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189823) 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, 530 + ... + 812.

It is an arithmetic number, because the mean of its divisors is an integer number (26412).

2¹⁸⁹⁸⁹³ is an apocalyptic number.

It is an amenable number.

189893 is a deficient number, since it is larger than the sum of its proper divisors (21403).

189893 is a wasteful number, since it uses less digits than its factorization.

189893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its digits is 15552, while the sum is 38.

The square root of 189893 is about 435.7671396514. The cubic root of 189893 is about 57.4781769737.

It can be divided in two parts, 1898 and 93, that added together give a palindrome (1991).

The spelling of 189893 in words is "one hundred eighty-nine thousand, eight hundred ninety-three".