238085609 has 2 divisors, whose sum is σ = 238085610. Its totient is φ = 238085608.

The previous prime is 238085521. The next prime is 238085671. The reversal of 238085609 is 906580832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217474009 + 20611600 = 14747^2 + 4540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238085609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238085009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119042804 + 119042805.

It is an arithmetic number, because the mean of its divisors is an integer number (119042805).

Almost surely, 2^238085609 is an apocalyptic number.

It is an amenable number.

238085609 is a deficient number, since it is larger than the sum of its proper divisors (1).

238085609 is an equidigital number, since it uses as much as digits as its factorization.

238085609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 238085609 is about 15430.0229747075. The cubic root of 238085609 is about 619.7897387956.

The spelling of 238085609 in words is "two hundred thirty-eight million, eighty-five thousand, six hundred nine".