238343839 has 2 divisors, whose sum is σ = 238343840. Its totient is φ = 238343838.

The previous prime is 238343813. The next prime is 238343843. The reversal of 238343839 is 938343832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238343839 - 2¹⁵ = 238311071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238343795 and 238343804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238313839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119171919 + 119171920.

It is an arithmetic number, because the mean of its divisors is an integer number (119171920).

Almost surely, 2^238343839 is an apocalyptic number.

238343839 is a deficient number, since it is larger than the sum of its proper divisors (1).

238343839 is an equidigital number, since it uses as much as digits as its factorization.

238343839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 43.

The square root of 238343839 is about 15438.3884845537. The cubic root of 238343839 is about 620.0137345206.

The spelling of 238343839 in words is "two hundred thirty-eight million, three hundred forty-three thousand, eight hundred thirty-nine".