289669 has 2 divisors, whose sum is σ = 289670. Its totient is φ = 289668.

The previous prime is 289657. The next prime is 289717. The reversal of 289669 is 966982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289444 + 225 = 538^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 289669 - 2⁵ = 289637 is a prime.

It is a super-2 number, since 2×289669² = 167816259122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144834 + 144835.

It is an arithmetic number, because the mean of its divisors is an integer number (144835).

2²⁸⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

289669 is a deficient number, since it is larger than the sum of its proper divisors (1).

289669 is an equidigital number, since it uses as much as digits as its factorization.

289669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 289669 is about 538.2090671849. The cubic root of 289669 is about 66.1658668578.

The spelling of 289669 in words is "two hundred eighty-nine thousand, six hundred sixty-nine".