238520039 has 4 divisors (see below), whose sum is σ = 241539360. Its totient is φ = 235500720.

The previous prime is 238520021. The next prime is 238520057. The reversal of 238520039 is 930025832.

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

It is an interprime number because it is at equal distance from previous prime (238520021) and next prime (238520057).

It is a cyclic number.

It is not a de Polignac number, because 238520039 - 2¹² = 238515943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238519987 and 238520014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238520339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1509542 + ... + 1509699.

It is an arithmetic number, because the mean of its divisors is an integer number (60384840).

Almost surely, 2^238520039 is an apocalyptic number.

238520039 is a deficient number, since it is larger than the sum of its proper divisors (3019321).

238520039 is an equidigital number, since it uses as much as digits as its factorization.

238520039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019320.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 238520039 is about 15444.0939844330. The cubic root of 238520039 is about 620.1664823473.

The spelling of 238520039 in words is "two hundred thirty-eight million, five hundred twenty thousand, thirty-nine".