238997459 has 4 divisors (see below), whose sum is σ = 240742104. Its totient is φ = 237252816.

The previous prime is 238997449. The next prime is 238997461. The reversal of 238997459 is 954799832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238997459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238997449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872117 + ... + 872390.

It is an arithmetic number, because the mean of its divisors is an integer number (60185526).

Almost surely, 2^238997459 is an apocalyptic number.

238997459 is a deficient number, since it is larger than the sum of its proper divisors (1744645).

238997459 is a wasteful number, since it uses less digits than its factorization.

238997459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744644.

The product of its digits is 4898880, while the sum is 56.

The square root of 238997459 is about 15459.5426517087. The cubic root of 238997459 is about 620.5799801801.

The spelling of 238997459 in words is "two hundred thirty-eight million, nine hundred ninety-seven thousand, four hundred fifty-nine".