238615139 has 8 divisors (see below), whose sum is σ = 273487200. Its totient is φ = 203939136.

The previous prime is 238615081. The next prime is 238615147. The reversal of 238615139 is 931516832.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238615139 - 2²⁴ = 221837923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238615159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46394 + ... + 51279.

It is an arithmetic number, because the mean of its divisors is an integer number (34185900).

Almost surely, 2^238615139 is an apocalyptic number.

238615139 is a deficient number, since it is larger than the sum of its proper divisors (34872061).

238615139 is an equidigital number, since it uses as much as digits as its factorization.

238615139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98029.

The product of its digits is 38880, while the sum is 38.

The square root of 238615139 is about 15447.1725244460. The cubic root of 238615139 is about 620.2488933069.

The spelling of 238615139 in words is "two hundred thirty-eight million, six hundred fifteen thousand, one hundred thirty-nine".