288939 has 8 divisors (see below), whose sum is σ = 440320. Its totient is φ = 165096.

The previous prime is 288931. The next prime is 288947. The reversal of 288939 is 939882.

It is an interprime number because it is at equal distance from previous prime (288931) and next prime (288947).

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

It is not a de Polignac number, because 288939 - 2³ = 288931 is a prime.

It is a Duffinian number.

288939 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 288897 and 288906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6859 + ... + 6900.

It is an arithmetic number, because the mean of its divisors is an integer number (55040).

2²⁸⁸⁹³⁹ is an apocalyptic number.

288939 is a deficient number, since it is larger than the sum of its proper divisors (151381).

288939 is a wasteful number, since it uses less digits than its factorization.

288939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13769.

The product of its digits is 31104, while the sum is 39.

The square root of 288939 is about 537.5304642530. The cubic root of 288939 is about 66.1102381753.

The spelling of 288939 in words is "two hundred eighty-eight thousand, nine hundred thirty-nine".