40443134221 has 8 divisors (see below), whose sum is σ = 46256592960. Its totient is φ = 34638642528.

The previous prime is 40443134213. The next prime is 40443134227. The reversal of 40443134221 is 12243134404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40443134221 - 2³ = 40443134213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40443134221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443134227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2232091 + ... + 2250136.

It is an arithmetic number, because the mean of its divisors is an integer number (5782074120).

Almost surely, 2^40443134221 is an apocalyptic number.

It is an amenable number.

40443134221 is a deficient number, since it is larger than the sum of its proper divisors (5813458739).

40443134221 is a wasteful number, since it uses less digits than its factorization.

40443134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483523.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40443134221 its reverse (12243134404), we get a palindrome (52686268625).

The spelling of 40443134221 in words is "forty billion, four hundred forty-three million, one hundred thirty-four thousand, two hundred twenty-one".