189669 has 8 divisors (see below), whose sum is σ = 267840. Its totient is φ = 118976.

The previous prime is 189661. The next prime is 189671. The reversal of 189669 is 966981.

189669 is nontrivially palindromic in base 12.

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 189669 - 2³ = 189661 is a prime.

It is a super-2 number, since 2×189669² = 71948659122, which contains 22 as substring.

189669 is an undulating number in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189661) 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, 1809 + ... + 1910.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2¹⁸⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

189669 is a deficient number, since it is larger than the sum of its proper divisors (78171).

189669 is a wasteful number, since it uses less digits than its factorization.

189669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739.

The product of its digits is 23328, while the sum is 39.

The square root of 189669 is about 435.5100458084. The cubic root of 189669 is about 57.4555674384.

It can be divided in two parts, 189 and 669, that added together give a palindrome (858).

The spelling of 189669 in words is "one hundred eighty-nine thousand, six hundred sixty-nine".