288439 has 12 divisors (see below), whose sum is σ = 329184. Its totient is φ = 251712.

The previous prime is 288433. The next prime is 288461. The reversal of 288439 is 934882.

It is a de Polignac number, because none of the positive numbers 2^k-288439 is a prime.

It is a Duffinian number.

288439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6114 + ... + 6160.

It is an arithmetic number, because the mean of its divisors is an integer number (27432).

2²⁸⁸⁴³⁹ is an apocalyptic number.

288439 is a deficient number, since it is larger than the sum of its proper divisors (40745).

288439 is a wasteful number, since it uses less digits than its factorization.

288439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 83 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 288439 is about 537.0651729539. The cubic root of 288439 is about 66.0720822503.

It can be divided in two parts, 288 and 439, that added together give a palindrome (727).

The spelling of 288439 in words is "two hundred eighty-eight thousand, four hundred thirty-nine".