284387 has 2 divisors, whose sum is σ = 284388. Its totient is φ = 284386.

The previous prime is 284377. The next prime is 284407. The reversal of 284387 is 783482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284387 - 2⁸ = 284131 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284387.

It is not a weakly prime, because it can be changed into another prime (284357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142193 + 142194.

It is an arithmetic number, because the mean of its divisors is an integer number (142194).

2²⁸⁴³⁸⁷ is an apocalyptic number.

284387 is a deficient number, since it is larger than the sum of its proper divisors (1).

284387 is an equidigital number, since it uses as much as digits as its factorization.

284387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 32.

The square root of 284387 is about 533.2794764474. The cubic root of 284387 is about 65.7612278242.

The spelling of 284387 in words is "two hundred eighty-four thousand, three hundred eighty-seven".