440534421455 has 16 divisors (see below), whose sum is σ = 543392821344. Its totient is φ = 342609471360.

The previous prime is 440534421427. The next prime is 440534421487. The reversal of 440534421455 is 554124435044.

It is not a de Polignac number, because 440534421455 - 2⁸ = 440534421199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800132 + ... + 1233401.

It is an arithmetic number, because the mean of its divisors is an integer number (33962051334).

Almost surely, 2^440534421455 is an apocalyptic number.

440534421455 is a deficient number, since it is larger than the sum of its proper divisors (102858399889).

440534421455 is a wasteful number, since it uses less digits than its factorization.

440534421455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034746.

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 440534421455 its reverse (554124435044), we get a palindrome (994658856499).

The spelling of 440534421455 in words is "four hundred forty billion, five hundred thirty-four million, four hundred twenty-one thousand, four hundred fifty-five".