289799 has 4 divisors (see below), whose sum is σ = 306864. Its totient is φ = 272736.

The previous prime is 289789. The next prime is 289837. The reversal of 289799 is 997982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289799 - 2⁸ = 289543 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 289799.

It is not an unprimeable number, because it can be changed into a prime (289759) 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, 8507 + ... + 8540.

It is an arithmetic number, because the mean of its divisors is an integer number (76716).

2²⁸⁹⁷⁹⁹ is an apocalyptic number.

289799 is a deficient number, since it is larger than the sum of its proper divisors (17065).

289799 is a wasteful number, since it uses less digits than its factorization.

289799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17064.

The product of its digits is 81648, while the sum is 44.

The square root of 289799 is about 538.3298245500. The cubic root of 289799 is about 66.1757635286.

The spelling of 289799 in words is "two hundred eighty-nine thousand, seven hundred ninety-nine".