238239893 has 2 divisors, whose sum is σ = 238239894. Its totient is φ = 238239892.

The previous prime is 238239877. The next prime is 238239899. The reversal of 238239893 is 398932832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184334929 + 53904964 = 13577^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 238239893 - 2⁴ = 238239877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238239899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119119946 + 119119947.

It is an arithmetic number, because the mean of its divisors is an integer number (119119947).

Almost surely, 2^238239893 is an apocalyptic number.

It is an amenable number.

238239893 is a deficient number, since it is larger than the sum of its proper divisors (1).

238239893 is an equidigital number, since it uses as much as digits as its factorization.

238239893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The square root of 238239893 is about 15435.0216391167. The cubic root of 238239893 is about 619.9235883979.

The spelling of 238239893 in words is "two hundred thirty-eight million, two hundred thirty-nine thousand, eight hundred ninety-three".