440344212021 has 36 divisors (see below), whose sum is σ = 767189902752. Its totient is φ = 238381816752.

The previous prime is 440344211911. The next prime is 440344212037. The reversal of 440344212021 is 120212443044.

440344212021 is a `hidden beast` number, since 4 + 4 + 0 + 34 + 421 + 202 + 1 = 666.

It is not a de Polignac number, because 440344212021 - 2³¹ = 438196728373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440344212041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9658131 + ... + 9703616.

It is an arithmetic number, because the mean of its divisors is an integer number (21310830632).

Almost surely, 2^440344212021 is an apocalyptic number.

It is an amenable number.

440344212021 is a deficient number, since it is larger than the sum of its proper divisors (326845690731).

440344212021 is a wasteful number, since it uses less digits than its factorization.

440344212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19361798 (or 19361776 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 440344212021 its reverse (120212443044), we get a palindrome (560556655065).

The spelling of 440344212021 in words is "four hundred forty billion, three hundred forty-four million, two hundred twelve thousand, twenty-one".