288389 has 2 divisors, whose sum is σ = 288390. Its totient is φ = 288388.

The previous prime is 288383. The next prime is 288403. The reversal of 288389 is 983882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195364 + 93025 = 442^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 288389 - 2¹² = 284293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144194 + 144195.

It is an arithmetic number, because the mean of its divisors is an integer number (144195).

2²⁸⁸³⁸⁹ is an apocalyptic number.

It is an amenable number.

288389 is a deficient number, since it is larger than the sum of its proper divisors (1).

288389 is an equidigital number, since it uses as much as digits as its factorization.

288389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 288389 is about 537.0186216511. The cubic root of 288389 is about 66.0682642333.

The spelling of 288389 in words is "two hundred eighty-eight thousand, three hundred eighty-nine".