238861229 has 2 divisors, whose sum is σ = 238861230. Its totient is φ = 238861228.

The previous prime is 238861199. The next prime is 238861241. The reversal of 238861229 is 922168832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225060004 + 13801225 = 15002^2 + 3715^2 .

It is a cyclic number.

It is not a de Polignac number, because 238861229 - 2¹² = 238857133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238861289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119430614 + 119430615.

It is an arithmetic number, because the mean of its divisors is an integer number (119430615).

Almost surely, 2^238861229 is an apocalyptic number.

It is an amenable number.

238861229 is a deficient number, since it is larger than the sum of its proper divisors (1).

238861229 is an equidigital number, since it uses as much as digits as its factorization.

238861229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 238861229 is about 15455.1360071660. The cubic root of 238861229 is about 620.4620463197.

The spelling of 238861229 in words is "two hundred thirty-eight million, eight hundred sixty-one thousand, two hundred twenty-nine".