440042443 has 4 divisors (see below), whose sum is σ = 451935520. Its totient is φ = 428149368.

The previous prime is 440042437. The next prime is 440042459. The reversal of 440042443 is 344240044.

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 440042443 - 2¹³ = 440034251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440042423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5946483 + ... + 5946556.

It is an arithmetic number, because the mean of its divisors is an integer number (112983880).

Almost surely, 2^440042443 is an apocalyptic number.

440042443 is a deficient number, since it is larger than the sum of its proper divisors (11893077).

440042443 is a wasteful number, since it uses less digits than its factorization.

440042443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11893076.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 440042443 is about 20977.1886343237. The cubic root of 440042443 is about 760.6149472313.

Adding to 440042443 its reverse (344240044), we get a palindrome (784282487).

The spelling of 440042443 in words is "four hundred forty million, forty-two thousand, four hundred forty-three".