289929 has 4 divisors (see below), whose sum is σ = 386576. Its totient is φ = 193284.

The previous prime is 289897. The next prime is 289937. The reversal of 289929 is 929982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 289929 - 2⁵ = 289897 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289929.

It is not an unprimeable number, because it can be changed into a prime (289999) 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, 48319 + ... + 48324.

It is an arithmetic number, because the mean of its divisors is an integer number (96644).

2²⁸⁹⁹²⁹ is an apocalyptic number.

It is an amenable number.

289929 is a deficient number, since it is larger than the sum of its proper divisors (96647).

289929 is an equidigital number, since it uses as much as digits as its factorization.

289929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96646.

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

The square root of 289929 is about 538.4505548330. The cubic root of 289929 is about 66.1856572403.

The spelling of 289929 in words is "two hundred eighty-nine thousand, nine hundred twenty-nine".