228144409 has 2 divisors, whose sum is σ = 228144410. Its totient is φ = 228144408.

The previous prime is 228144359. The next prime is 228144443. The reversal of 228144409 is 904441822.

228144409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (228144443) can be obtained adding 228144409 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209438784 + 18705625 = 14472^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 228144409 - 2⁷ = 228144281 is a prime.

It is not a weakly prime, because it can be changed into another prime (228145409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114072204 + 114072205.

It is an arithmetic number, because the mean of its divisors is an integer number (114072205).

Almost surely, 2^228144409 is an apocalyptic number.

It is an amenable number.

228144409 is a deficient number, since it is larger than the sum of its proper divisors (1).

228144409 is an equidigital number, since it uses as much as digits as its factorization.

228144409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 228144409 is about 15104.4499734350. The cubic root of 228144409 is about 611.0404254466.

The spelling of 228144409 in words is "two hundred twenty-eight million, one hundred forty-four thousand, four hundred nine".