238828939 has 2 divisors, whose sum is σ = 238828940. Its totient is φ = 238828938.

The previous prime is 238828907. The next prime is 238828973. The reversal of 238828939 is 939828832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238828939 - 2⁵ = 238828907 is a prime.

It is not a weakly prime, because it can be changed into another prime (238828979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119414469 + 119414470.

It is an arithmetic number, because the mean of its divisors is an integer number (119414470).

Almost surely, 2^238828939 is an apocalyptic number.

238828939 is a deficient number, since it is larger than the sum of its proper divisors (1).

238828939 is an equidigital number, since it uses as much as digits as its factorization.

238828939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 52.

The square root of 238828939 is about 15454.0913353066. The cubic root of 238828939 is about 620.4340864001.

The spelling of 238828939 in words is "two hundred thirty-eight million, eight hundred twenty-eight thousand, nine hundred thirty-nine".