238129459 has 2 divisors, whose sum is σ = 238129460. Its totient is φ = 238129458.

The previous prime is 238129433. The next prime is 238129481. The reversal of 238129459 is 954921832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238129459 - 2¹⁹ = 237605171 is a prime.

It is not a weakly prime, because it can be changed into another prime (238129429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119064729 + 119064730.

It is an arithmetic number, because the mean of its divisors is an integer number (119064730).

Almost surely, 2^238129459 is an apocalyptic number.

238129459 is a deficient number, since it is larger than the sum of its proper divisors (1).

238129459 is an equidigital number, since it uses as much as digits as its factorization.

238129459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 238129459 is about 15431.4438404188. The cubic root of 238129459 is about 619.8277868908.

The spelling of 238129459 in words is "two hundred thirty-eight million, one hundred twenty-nine thousand, four hundred fifty-nine".