284308109 has 2 divisors, whose sum is σ = 284308110. Its totient is φ = 284308108.

The previous prime is 284308093. The next prime is 284308139. The reversal of 284308109 is 901803482.

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., 226502500 + 57805609 = 15050^2 + 7603^2 .

It is a cyclic number.

It is not a de Polignac number, because 284308109 - 2⁴ = 284308093 is a prime.

It is a super-2 number, since 2×284308109² = 161662201686311762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284308139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142154054 + 142154055.

It is an arithmetic number, because the mean of its divisors is an integer number (142154055).

Almost surely, 2^284308109 is an apocalyptic number.

It is an amenable number.

284308109 is a deficient number, since it is larger than the sum of its proper divisors (1).

284308109 is an equidigital number, since it uses as much as digits as its factorization.

284308109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 284308109 is about 16861.4385210752. The cubic root of 284308109 is about 657.5514638258.

The spelling of 284308109 in words is "two hundred eighty-four million, three hundred eight thousand, one hundred nine".