289697 has 4 divisors (see below), whose sum is σ = 306756. Its totient is φ = 272640.

The previous prime is 289669. The next prime is 289717. The reversal of 289697 is 796982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796982 = 2 ⋅398491.

It can be written as a sum of positive squares in 2 ways, for example, as 246016 + 43681 = 496^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 289697 - 2¹⁴ = 273313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289697.

It is not an unprimeable number, because it can be changed into a prime (289607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8504 + ... + 8537.

It is an arithmetic number, because the mean of its divisors is an integer number (76689).

2²⁸⁹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

289697 is a deficient number, since it is larger than the sum of its proper divisors (17059).

289697 is a wasteful number, since it uses less digits than its factorization.

289697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17058.

The product of its digits is 54432, while the sum is 41.

The square root of 289697 is about 538.2350787528. The cubic root of 289697 is about 66.1679986986.

The spelling of 289697 in words is "two hundred eighty-nine thousand, six hundred ninety-seven".