238380889 has 2 divisors, whose sum is σ = 238380890. Its totient is φ = 238380888.

The previous prime is 238380881. The next prime is 238380911. The reversal of 238380889 is 988083832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180499225 + 57881664 = 13435^2 + 7608^2 .

It is a cyclic number.

It is not a de Polignac number, because 238380889 - 2³ = 238380881 is a prime.

It is not a weakly prime, because it can be changed into another prime (238380881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119190444 + 119190445.

It is an arithmetic number, because the mean of its divisors is an integer number (119190445).

Almost surely, 2^238380889 is an apocalyptic number.

It is an amenable number.

238380889 is a deficient number, since it is larger than the sum of its proper divisors (1).

238380889 is an equidigital number, since it uses as much as digits as its factorization.

238380889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 238380889 is about 15439.5883688653. The cubic root of 238380889 is about 620.0458594244.

The spelling of 238380889 in words is "two hundred thirty-eight million, three hundred eighty thousand, eight hundred eighty-nine".