440433134221 has 4 divisors (see below), whose sum is σ = 440688755872. Its totient is φ = 440177512572.

The previous prime is 440433134213. The next prime is 440433134227. The reversal of 440433134221 is 122431334044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440433134221 - 2³ = 440433134213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440433134227) 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, 127808241 + ... + 127811686.

It is an arithmetic number, because the mean of its divisors is an integer number (110172188968).

Almost surely, 2^440433134221 is an apocalyptic number.

It is an amenable number.

440433134221 is a deficient number, since it is larger than the sum of its proper divisors (255621651).

440433134221 is a wasteful number, since it uses less digits than its factorization.

440433134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255621650.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 440433134221 its reverse (122431334044), we get a palindrome (562864468265).

The spelling of 440433134221 in words is "four hundred forty billion, four hundred thirty-three million, one hundred thirty-four thousand, two hundred twenty-one".