442644223 has 8 divisors (see below), whose sum is σ = 527874048. Its totient is φ = 362913144.

The previous prime is 442644221. The next prime is 442644247. The reversal of 442644223 is 322446244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442644223 - 2¹ = 442644221 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 (442644221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374511 + ... + 1374832.

It is an arithmetic number, because the mean of its divisors is an integer number (65984256).

Almost surely, 2^442644223 is an apocalyptic number.

442644223 is a deficient number, since it is larger than the sum of its proper divisors (85229825).

442644223 is a wasteful number, since it uses less digits than its factorization.

442644223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749373.

The product of its digits is 36864, while the sum is 31.

The square root of 442644223 is about 21039.1117445580. Note that the first 3 decimals coincide. The cubic root of 442644223 is about 762.1110644963. Note that the first 3 decimals are identical.

The spelling of 442644223 in words is "four hundred forty-two million, six hundred forty-four thousand, two hundred twenty-three".