442204405 has 8 divisors (see below), whose sum is σ = 531984312. Its totient is φ = 352870848.

The previous prime is 442204403. The next prime is 442204471. The reversal of 442204405 is 504402244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120253156 + 321951249 = 10966^2 + 17943^2 .

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 442204405 - 2¹ = 442204403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442204405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442204403) 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, 109402 + ... + 113371.

It is an arithmetic number, because the mean of its divisors is an integer number (66498039).

Almost surely, 2^442204405 is an apocalyptic number.

It is an amenable number.

442204405 is a deficient number, since it is larger than the sum of its proper divisors (89779907).

442204405 is a wasteful number, since it uses less digits than its factorization.

442204405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223175.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 442204405 is about 21028.6567569115. The cubic root of 442204405 is about 761.8585658192.

Adding to 442204405 its reverse (504402244), we get a palindrome (946606649).

The spelling of 442204405 in words is "four hundred forty-two million, two hundred four thousand, four hundred five".