238563869 has 4 divisors (see below), whose sum is σ = 243639744. Its totient is φ = 233487996.

The previous prime is 238563859. The next prime is 238563887. The reversal of 238563869 is 968365832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238563869 - 2¹⁶ = 238498333 is a prime.

It is a super-2 number, since 2×238563869² = 113825439184498322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238563859) 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 in 3 ways as a sum of consecutive naturals, for example, 2537867 + ... + 2537960.

It is an arithmetic number, because the mean of its divisors is an integer number (60909936).

Almost surely, 2^238563869 is an apocalyptic number.

It is an amenable number.

238563869 is a deficient number, since it is larger than the sum of its proper divisors (5075875).

238563869 is an equidigital number, since it uses as much as digits as its factorization.

238563869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075874.

The product of its digits is 1866240, while the sum is 50.

The square root of 238563869 is about 15445.5129082850. The cubic root of 238563869 is about 620.2044669016.

The spelling of 238563869 in words is "two hundred thirty-eight million, five hundred sixty-three thousand, eight hundred sixty-nine".