238904093 has 2 divisors, whose sum is σ = 238904094. Its totient is φ = 238904092.

The previous prime is 238904069. The next prime is 238904101. The reversal of 238904093 is 390409832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202265284 + 36638809 = 14222^2 + 6053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238904093 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 (238904033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119452046 + 119452047.

It is an arithmetic number, because the mean of its divisors is an integer number (119452047).

Almost surely, 2^238904093 is an apocalyptic number.

It is an amenable number.

238904093 is a deficient number, since it is larger than the sum of its proper divisors (1).

238904093 is an equidigital number, since it uses as much as digits as its factorization.

238904093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 238904093 is about 15456.5226684400. The cubic root of 238904093 is about 620.4991583765.

The spelling of 238904093 in words is "two hundred thirty-eight million, nine hundred four thousand, ninety-three".