289436 has 12 divisors (see below), whose sum is σ = 578928. Its totient is φ = 124032.

The previous prime is 289423. The next prime is 289439. The reversal of 289436 is 634982.

289436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

289436 is an admirable number.

It is a d-powerful number, because it can be written as 2³ + 8 + 4⁸ + 9² + 3¹¹ + 6⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289439) by changing a digit.

289436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5141 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (48244).

2²⁸⁹⁴³⁶ is an apocalyptic number.

It is an amenable number.

289436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289436 is a wasteful number, since it uses less digits than its factorization.

289436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348 (or 10346 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 289436 is about 537.9925650044. The cubic root of 289436 is about 66.1481215665.

The spelling of 289436 in words is "two hundred eighty-nine thousand, four hundred thirty-six".