288442489 has 2 divisors, whose sum is σ = 288442490. Its totient is φ = 288442488.

The previous prime is 288442487. The next prime is 288442501. The reversal of 288442489 is 984244882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285610000 + 2832489 = 16900^2 + 1683^2 .

It is a cyclic number.

It is not a de Polignac number, because 288442489 - 2¹ = 288442487 is a prime.

Together with 288442487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (288442487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144221244 + 144221245.

It is an arithmetic number, because the mean of its divisors is an integer number (144221245).

Almost surely, 2^288442489 is an apocalyptic number.

It is an amenable number.

288442489 is a deficient number, since it is larger than the sum of its proper divisors (1).

288442489 is an equidigital number, since it uses as much as digits as its factorization.

288442489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1179648, while the sum is 49.

The square root of 288442489 is about 16983.5947019469. The cubic root of 288442489 is about 660.7234865506.

The spelling of 288442489 in words is "two hundred eighty-eight million, four hundred forty-two thousand, four hundred eighty-nine".