288278839 has 2 divisors, whose sum is σ = 288278840. Its totient is φ = 288278838.

The previous prime is 288278813. The next prime is 288278869. The reversal of 288278839 is 938872882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 288278839 - 2¹⁷ = 288147767 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 288278839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288278869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144139419 + 144139420.

It is an arithmetic number, because the mean of its divisors is an integer number (144139420).

Almost surely, 2^288278839 is an apocalyptic number.

288278839 is a deficient number, since it is larger than the sum of its proper divisors (1).

288278839 is an equidigital number, since it uses as much as digits as its factorization.

288278839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 55.

The square root of 288278839 is about 16978.7761337500. The cubic root of 288278839 is about 660.5985074438.

The spelling of 288278839 in words is "two hundred eighty-eight million, two hundred seventy-eight thousand, eight hundred thirty-nine".