239378141 has 2 divisors, whose sum is σ = 239378142. Its totient is φ = 239378140.

The previous prime is 239378101. The next prime is 239378143. The reversal of 239378141 is 141873932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226382116 + 12996025 = 15046^2 + 3605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239378141 is a prime.

Together with 239378143, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 239378141 parts by 21880 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 239378095 and 239378104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239378143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119689070 + 119689071.

It is an arithmetic number, because the mean of its divisors is an integer number (119689071).

Almost surely, 2^239378141 is an apocalyptic number.

It is an amenable number.

239378141 is a deficient number, since it is larger than the sum of its proper divisors (1).

239378141 is an equidigital number, since it uses as much as digits as its factorization.

239378141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 239378141 is about 15471.8499540294. The cubic root of 239378141 is about 620.9092979171.

The spelling of 239378141 in words is "two hundred thirty-nine million, three hundred seventy-eight thousand, one hundred forty-one".