440300040221 has 4 divisors (see below), whose sum is σ = 440302368000. Its totient is φ = 440297712444.

The previous prime is 440300040181. The next prime is 440300040227. The reversal of 440300040221 is 122040003044.

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 a de Polignac number, because none of the positive numbers 2^k-440300040221 is a prime.

It is a super-2 number, since 2×440300040221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440300040193 and 440300040202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440300040227) 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, 852371 + ... + 1267728.

It is an arithmetic number, because the mean of its divisors is an integer number (110075592000).

Almost surely, 2^440300040221 is an apocalyptic number.

It is an amenable number.

440300040221 is a deficient number, since it is larger than the sum of its proper divisors (2327779).

440300040221 is a wasteful number, since it uses less digits than its factorization.

440300040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327778.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 440300040221 its reverse (122040003044), we get a palindrome (562340043265).

The spelling of 440300040221 in words is "four hundred forty billion, three hundred million, forty thousand, two hundred twenty-one".