238889135 has 4 divisors (see below), whose sum is σ = 286666968. Its totient is φ = 191111304.

The previous prime is 238889107. The next prime is 238889149. The reversal of 238889135 is 531988832.

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 238889135 - 2¹⁸ = 238626991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238889135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23888909 + ... + 23888918.

It is an arithmetic number, because the mean of its divisors is an integer number (71666742).

Almost surely, 2^238889135 is an apocalyptic number.

238889135 is a deficient number, since it is larger than the sum of its proper divisors (47777833).

238889135 is an equidigital number, since it uses as much as digits as its factorization.

238889135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47777832.

The product of its digits is 414720, while the sum is 47.

The square root of 238889135 is about 15456.0387874772. The cubic root of 238889135 is about 620.4862081028.

The spelling of 238889135 in words is "two hundred thirty-eight million, eight hundred eighty-nine thousand, one hundred thirty-five".