438223847 has 4 divisors (see below), whose sum is σ = 461288280. Its totient is φ = 415159416.

The previous prime is 438223813. The next prime is 438223859. The reversal of 438223847 is 748322834.

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 438223847 - 2¹⁴ = 438207463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438223897) 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, 11532188 + ... + 11532225.

It is an arithmetic number, because the mean of its divisors is an integer number (115322070).

Almost surely, 2^438223847 is an apocalyptic number.

438223847 is a deficient number, since it is larger than the sum of its proper divisors (23064433).

438223847 is a wasteful number, since it uses less digits than its factorization.

438223847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23064432.

The product of its digits is 258048, while the sum is 41.

The square root of 438223847 is about 20933.7967650400. The cubic root of 438223847 is about 759.5656838668.

The spelling of 438223847 in words is "four hundred thirty-eight million, two hundred twenty-three thousand, eight hundred forty-seven".