442211 has 8 divisors (see below), whose sum is σ = 551424. Its totient is φ = 344520.

The previous prime is 442207. The next prime is 442217. The reversal of 442211 is 112244.

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

It is not a de Polignac number, because 442211 - 2² = 442207 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442211.

It is not an unprimeable number, because it can be changed into a prime (442217) 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 7 ways as a sum of consecutive naturals, for example, 2795 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (68928).

2⁴⁴²²¹¹ is an apocalyptic number.

442211 is a deficient number, since it is larger than the sum of its proper divisors (109213).

442211 is a wasteful number, since it uses less digits than its factorization.

442211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761.

The product of its digits is 64, while the sum is 14.

The square root of 442211 is about 664.9894736009. The cubic root of 442211 is about 76.1862353232.

Adding to 442211 its sum of digits (14), we get a square (442225 = 665²).

Adding to 442211 its reverse (112244), we get a palindrome (554455).

The spelling of 442211 in words is "four hundred forty-two thousand, two hundred eleven", and thus it is an iban number.