238949999 has 2 divisors, whose sum is σ = 238950000. Its totient is φ = 238949998.

The previous prime is 238949987. The next prime is 238950031. The reversal of 238949999 is 999949832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238949999 - 2⁴ = 238949983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238949929) 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, 119474999 + 119475000.

It is an arithmetic number, because the mean of its divisors is an integer number (119475000).

Almost surely, 2^238949999 is an apocalyptic number.

238949999 is a deficient number, since it is larger than the sum of its proper divisors (1).

238949999 is an equidigital number, since it uses as much as digits as its factorization.

238949999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11337408, while the sum is 62.

The square root of 238949999 is about 15458.0076012402. The cubic root of 238949999 is about 620.5388993031.

The spelling of 238949999 in words is "two hundred thirty-eight million, nine hundred forty-nine thousand, nine hundred ninety-nine".