238033489 has 2 divisors, whose sum is σ = 238033490. Its totient is φ = 238033488.

The previous prime is 238033451. The next prime is 238033511. The reversal of 238033489 is 984330832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219543489 + 18490000 = 14817^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 238033489 - 2⁷ = 238033361 is a prime.

It is not a weakly prime, because it can be changed into another prime (238033409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119016744 + 119016745.

It is an arithmetic number, because the mean of its divisors is an integer number (119016745).

Almost surely, 2^238033489 is an apocalyptic number.

It is an amenable number.

238033489 is a deficient number, since it is larger than the sum of its proper divisors (1).

238033489 is an equidigital number, since it uses as much as digits as its factorization.

238033489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 238033489 is about 15428.3339670880. Note that the first 3 decimals coincide. The cubic root of 238033489 is about 619.7445088483.

The spelling of 238033489 in words is "two hundred thirty-eight million, thirty-three thousand, four hundred eighty-nine".