238225987 has 2 divisors, whose sum is σ = 238225988. Its totient is φ = 238225986.

The previous prime is 238225961. The next prime is 238226003. The reversal of 238225987 is 789522832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238225987 - 2⁷ = 238225859 is a prime.

It is not a weakly prime, because it can be changed into another prime (238225907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119112993 + 119112994.

It is an arithmetic number, because the mean of its divisors is an integer number (119112994).

Almost surely, 2^238225987 is an apocalyptic number.

238225987 is a deficient number, since it is larger than the sum of its proper divisors (1).

238225987 is an equidigital number, since it uses as much as digits as its factorization.

238225987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 238225987 is about 15434.5711634629. The cubic root of 238225987 is about 619.9115265708.

The spelling of 238225987 in words is "two hundred thirty-eight million, two hundred twenty-five thousand, nine hundred eighty-seven".