238498391 has 2 divisors, whose sum is σ = 238498392. Its totient is φ = 238498390.

The previous prime is 238498369. The next prime is 238498417. The reversal of 238498391 is 193894832.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238498391 - 2²² = 234304087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238498331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119249195 + 119249196.

It is an arithmetic number, because the mean of its divisors is an integer number (119249196).

Almost surely, 2^238498391 is an apocalyptic number.

238498391 is a deficient number, since it is larger than the sum of its proper divisors (1).

238498391 is an equidigital number, since it uses as much as digits as its factorization.

238498391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 238498391 is about 15443.3931180942. The cubic root of 238498391 is about 620.1477197446.

The spelling of 238498391 in words is "two hundred thirty-eight million, four hundred ninety-eight thousand, three hundred ninety-one".