238950721 has 2 divisors, whose sum is σ = 238950722. Its totient is φ = 238950720.

The previous prime is 238950709. The next prime is 238950731. The reversal of 238950721 is 127059832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238270096 + 680625 = 15436^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 238950721 - 2⁵ = 238950689 is a prime.

It is not a weakly prime, because it can be changed into another prime (238950731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119475360 + 119475361.

It is an arithmetic number, because the mean of its divisors is an integer number (119475361).

Almost surely, 2^238950721 is an apocalyptic number.

It is an amenable number.

238950721 is a deficient number, since it is larger than the sum of its proper divisors (1).

238950721 is an equidigital number, since it uses as much as digits as its factorization.

238950721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 238950721 is about 15458.0309548144. The cubic root of 238950721 is about 620.5395242994.

The spelling of 238950721 in words is "two hundred thirty-eight million, nine hundred fifty thousand, seven hundred twenty-one".