228283709 has 2 divisors, whose sum is σ = 228283710. Its totient is φ = 228283708.

The previous prime is 228283687. The next prime is 228283711. The reversal of 228283709 is 907382822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201554809 + 26728900 = 14197^2 + 5170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228283709 is a prime.

It is a super-2 number, since 2×228283709² = 104226903589593362, which contains 22 as substring.

Together with 228283711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228283729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114141854 + 114141855.

It is an arithmetic number, because the mean of its divisors is an integer number (114141855).

Almost surely, 2^228283709 is an apocalyptic number.

It is an amenable number.

228283709 is a deficient number, since it is larger than the sum of its proper divisors (1).

228283709 is an equidigital number, since it uses as much as digits as its factorization.

228283709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 228283709 is about 15109.0604936243. The cubic root of 228283709 is about 611.1647627962.

The spelling of 228283709 in words is "two hundred twenty-eight million, two hundred eighty-three thousand, seven hundred nine".