238654487 has 2 divisors, whose sum is σ = 238654488. Its totient is φ = 238654486.

The previous prime is 238654457. The next prime is 238654489. The reversal of 238654487 is 784456832.

238654487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238654487 - 2²⁰ = 237605911 is a prime.

Together with 238654489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238654489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119327243 + 119327244.

It is an arithmetic number, because the mean of its divisors is an integer number (119327244).

Almost surely, 2^238654487 is an apocalyptic number.

238654487 is a deficient number, since it is larger than the sum of its proper divisors (1).

238654487 is an equidigital number, since it uses as much as digits as its factorization.

238654487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 47.

The square root of 238654487 is about 15448.4461030875. The cubic root of 238654487 is about 620.2829847623.

The spelling of 238654487 in words is "two hundred thirty-eight million, six hundred fifty-four thousand, four hundred eighty-seven".