229308649 has 2 divisors, whose sum is σ = 229308650. Its totient is φ = 229308648.

The previous prime is 229308571. The next prime is 229308661. The reversal of 229308649 is 946803922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132089049 + 97219600 = 11493^2 + 9860^2 .

It is a cyclic number.

It is not a de Polignac number, because 229308649 - 2¹¹ = 229306601 is a prime.

It is not a weakly prime, because it can be changed into another prime (229308749) 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, 114654324 + 114654325.

It is an arithmetic number, because the mean of its divisors is an integer number (114654325).

Almost surely, 2^229308649 is an apocalyptic number.

It is an amenable number.

229308649 is a deficient number, since it is larger than the sum of its proper divisors (1).

229308649 is an equidigital number, since it uses as much as digits as its factorization.

229308649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 229308649 is about 15142.9405664818. The cubic root of 229308649 is about 612.0780591976.

The spelling of 229308649 in words is "two hundred twenty-nine million, three hundred eight thousand, six hundred forty-nine".