238888669 has 2 divisors, whose sum is σ = 238888670. Its totient is φ = 238888668.

The previous prime is 238888589. The next prime is 238888679. The reversal of 238888669 is 966888832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124612569 + 114276100 = 11163^2 + 10690^2 .

It is a cyclic number.

It is not a de Polignac number, because 238888669 - 2⁷ = 238888541 is a prime.

It is a super-2 number, since 2×238888669² = 114135592353183122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238888679) 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, 119444334 + 119444335.

It is an arithmetic number, because the mean of its divisors is an integer number (119444335).

Almost surely, 2^238888669 is an apocalyptic number.

It is an amenable number.

238888669 is a deficient number, since it is larger than the sum of its proper divisors (1).

238888669 is an equidigital number, since it uses as much as digits as its factorization.

238888669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 58.

The square root of 238888669 is about 15456.0237124559. The cubic root of 238888669 is about 620.4858046427.

The spelling of 238888669 in words is "two hundred thirty-eight million, eight hundred eighty-eight thousand, six hundred sixty-nine".