238738099 has 4 divisors (see below), whose sum is σ = 246439360. Its totient is φ = 231036840.

The previous prime is 238738069. The next prime is 238738109. The reversal of 238738099 is 990837832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238738099 - 2⁷ = 238737971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238738009) 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 in 3 ways as a sum of consecutive naturals, for example, 3850584 + ... + 3850645.

It is an arithmetic number, because the mean of its divisors is an integer number (61609840).

Almost surely, 2^238738099 is an apocalyptic number.

238738099 is a deficient number, since it is larger than the sum of its proper divisors (7701261).

238738099 is an equidigital number, since it uses as much as digits as its factorization.

238738099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701260.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 238738099 is about 15451.1520282470. The cubic root of 238738099 is about 620.3554144996.

The spelling of 238738099 in words is "two hundred thirty-eight million, seven hundred thirty-eight thousand, ninety-nine".