238857793 has 2 divisors, whose sum is σ = 238857794. Its totient is φ = 238857792.

The previous prime is 238857791. The next prime is 238857811. The reversal of 238857793 is 397758832.

238857793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138697729 + 100160064 = 11777^2 + 10008^2 .

It is a cyclic number.

It is not a de Polignac number, because 238857793 - 2¹ = 238857791 is a prime.

Together with 238857791, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 238857793.

It is not a weakly prime, because it can be changed into another prime (238857791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119428896 + 119428897.

It is an arithmetic number, because the mean of its divisors is an integer number (119428897).

Almost surely, 2^238857793 is an apocalyptic number.

It is an amenable number.

238857793 is a deficient number, since it is larger than the sum of its proper divisors (1).

238857793 is an equidigital number, since it uses as much as digits as its factorization.

238857793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 52.

The square root of 238857793 is about 15455.0248463081. The cubic root of 238857793 is about 620.4590712062.

The spelling of 238857793 in words is "two hundred thirty-eight million, eight hundred fifty-seven thousand, seven hundred ninety-three".