238928077 has 2 divisors, whose sum is σ = 238928078. Its totient is φ = 238928076.

The previous prime is 238928029. The next prime is 238928089. The reversal of 238928077 is 770829832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172896201 + 66031876 = 13149^2 + 8126^2 .

It is a cyclic number.

It is not a de Polignac number, because 238928077 - 2¹⁵ = 238895309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208928077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119464038 + 119464039.

It is an arithmetic number, because the mean of its divisors is an integer number (119464039).

Almost surely, 2^238928077 is an apocalyptic number.

It is an amenable number.

238928077 is a deficient number, since it is larger than the sum of its proper divisors (1).

238928077 is an equidigital number, since it uses as much as digits as its factorization.

238928077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 238928077 is about 15457.2985026492. The cubic root of 238928077 is about 620.5199220138.

The spelling of 238928077 in words is "two hundred thirty-eight million, nine hundred twenty-eight thousand, seventy-seven".