289797 has 8 divisors (see below), whose sum is σ = 399840. Its totient is φ = 186480.

The previous prime is 289789. The next prime is 289837. The reversal of 289797 is 797982.

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

It is not a de Polignac number, because 289797 - 2³ = 289789 is a prime.

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 289797.

It is not an unprimeable number, because it can be changed into a prime (289717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 1752.

It is an arithmetic number, because the mean of its divisors is an integer number (49980).

2²⁸⁹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

289797 is a deficient number, since it is larger than the sum of its proper divisors (110043).

289797 is a wasteful number, since it uses less digits than its factorization.

289797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363.

The product of its digits is 63504, while the sum is 42.

The square root of 289797 is about 538.3279669495. The cubic root of 289797 is about 66.1756112946.

The spelling of 289797 in words is "two hundred eighty-nine thousand, seven hundred ninety-seven".