238226447 has 4 divisors (see below), whose sum is σ = 238515336. Its totient is φ = 237937560.

The previous prime is 238226437. The next prime is 238226453. The reversal of 238226447 is 744622832.

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

It is a cyclic number.

It is not a de Polignac number, because 238226447 - 2¹⁰ = 238225423 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 238226447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238226437) 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, 143204 + ... + 144857.

It is an arithmetic number, because the mean of its divisors is an integer number (59628834).

Almost surely, 2^238226447 is an apocalyptic number.

238226447 is a deficient number, since it is larger than the sum of its proper divisors (288889).

238226447 is an equidigital number, since it uses as much as digits as its factorization.

238226447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288888.

The product of its digits is 129024, while the sum is 38.

The square root of 238226447 is about 15434.5860650683. The cubic root of 238226447 is about 619.9119255745.

The spelling of 238226447 in words is "two hundred thirty-eight million, two hundred twenty-six thousand, four hundred forty-seven".