238727849 has 2 divisors, whose sum is σ = 238727850. Its totient is φ = 238727848.

The previous prime is 238727813. The next prime is 238727851. The reversal of 238727849 is 948727832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167443600 + 71284249 = 12940^2 + 8443^2 .

It is a cyclic number.

It is not a de Polignac number, because 238727849 - 2¹² = 238723753 is a prime.

Together with 238727851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 238727797 and 238727806.

It is not a weakly prime, because it can be changed into another prime (238727149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119363924 + 119363925.

It is an arithmetic number, because the mean of its divisors is an integer number (119363925).

Almost surely, 2^238727849 is an apocalyptic number.

It is an amenable number.

238727849 is a deficient number, since it is larger than the sum of its proper divisors (1).

238727849 is an equidigital number, since it uses as much as digits as its factorization.

238727849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The square root of 238727849 is about 15450.8203342088. The cubic root of 238727849 is about 620.3465362434.

The spelling of 238727849 in words is "two hundred thirty-eight million, seven hundred twenty-seven thousand, eight hundred forty-nine".