440420044135 has 4 divisors (see below), whose sum is σ = 528504052968. Its totient is φ = 352336035304.

The previous prime is 440420044111. The next prime is 440420044147. The reversal of 440420044135 is 531440024044.

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 440420044135 - 2⁷ = 440420044007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440420044097 and 440420044106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44042004409 + ... + 44042004418.

It is an arithmetic number, because the mean of its divisors is an integer number (132126013242).

Almost surely, 2^440420044135 is an apocalyptic number.

440420044135 is a deficient number, since it is larger than the sum of its proper divisors (88084008833).

440420044135 is an equidigital number, since it uses as much as digits as its factorization.

440420044135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88084008832.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 440420044135 its reverse (531440024044), we get a palindrome (971860068179).

The spelling of 440420044135 in words is "four hundred forty billion, four hundred twenty million, forty-four thousand, one hundred thirty-five".