438223846 has 4 divisors (see below), whose sum is σ = 657335772. Its totient is φ = 219111922.

The previous prime is 438223813. The next prime is 438223859. The reversal of 438223846 is 648322834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 648322834 = 2 ⋅324161417.

It is a junction number, because it is equal to n+sod(n) for n = 438223799 and 438223808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109555960 + ... + 109555963.

It is an arithmetic number, because the mean of its divisors is an integer number (164333943).

Almost surely, 2^438223846 is an apocalyptic number.

438223846 is a deficient number, since it is larger than the sum of its proper divisors (219111926).

438223846 is a wasteful number, since it uses less digits than its factorization.

438223846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219111925.

The product of its digits is 221184, while the sum is 40.

The square root of 438223846 is about 20933.7967411552. The cubic root of 438223846 is about 759.5656832890.

The spelling of 438223846 in words is "four hundred thirty-eight million, two hundred twenty-three thousand, eight hundred forty-six".