284438389 has 2 divisors, whose sum is σ = 284438390. Its totient is φ = 284438388.

The previous prime is 284438369. The next prime is 284438411. The reversal of 284438389 is 983834482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149646289 + 134792100 = 12233^2 + 11610^2 .

It is a cyclic number.

It is not a de Polignac number, because 284438389 - 2⁹ = 284437877 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 (284438369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142219194 + 142219195.

It is an arithmetic number, because the mean of its divisors is an integer number (142219195).

Almost surely, 2^284438389 is an apocalyptic number.

It is an amenable number.

284438389 is a deficient number, since it is larger than the sum of its proper divisors (1).

284438389 is an equidigital number, since it uses as much as digits as its factorization.

284438389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 49.

The square root of 284438389 is about 16865.3013314319. The cubic root of 284438389 is about 657.6518862435.

The spelling of 284438389 in words is "two hundred eighty-four million, four hundred thirty-eight thousand, three hundred eighty-nine".