238347129 has 4 divisors (see below), whose sum is σ = 317796176. Its totient is φ = 158898084.

The previous prime is 238347121. The next prime is 238347149. The reversal of 238347129 is 921743832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 238347129 - 2³ = 238347121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238347121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39724519 + ... + 39724524.

It is an arithmetic number, because the mean of its divisors is an integer number (79449044).

Almost surely, 2^238347129 is an apocalyptic number.

It is an amenable number.

238347129 is a deficient number, since it is larger than the sum of its proper divisors (79449047).

238347129 is an equidigital number, since it uses as much as digits as its factorization.

238347129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79449046.

The product of its digits is 72576, while the sum is 39.

The square root of 238347129 is about 15438.4950367580. The cubic root of 238347129 is about 620.0165873120.

The spelling of 238347129 in words is "two hundred thirty-eight million, three hundred forty-seven thousand, one hundred twenty-nine".