440420221340 has 36 divisors (see below), whose sum is σ = 1016606351208. Its totient is φ = 160152806880.

The previous prime is 440420221321. The next prime is 440420221363. The reversal of 440420221340 is 43122024044.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90993494 + ... + 90998333.

Almost surely, 2^440420221340 is an apocalyptic number.

It is an amenable number.

440420221340 is an abundant number, since it is smaller than the sum of its proper divisors (576186129868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440420221340 is a wasteful number, since it uses less digits than its factorization.

440420221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181991858 (or 181991845 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 440420221340 its reverse (43122024044), we get a palindrome (483542245384).

The spelling of 440420221340 in words is "four hundred forty billion, four hundred twenty million, two hundred twenty-one thousand, three hundred forty".