440432013121 has 4 divisors (see below), whose sum is σ = 441612796372. Its totient is φ = 439251229872.

The previous prime is 440432013107. The next prime is 440432013163. The reversal of 440432013121 is 121310234044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104106249025 + 336325764096 = 322655^2 + 579936^2 .

It is a cyclic number.

It is not a de Polignac number, because 440432013121 - 2¹¹ = 440432011073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440432053121) 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, 590391066 + ... + 590391811.

It is an arithmetic number, because the mean of its divisors is an integer number (110403199093).

Almost surely, 2^440432013121 is an apocalyptic number.

It is an amenable number.

440432013121 is a deficient number, since it is larger than the sum of its proper divisors (1180783251).

440432013121 is a wasteful number, since it uses less digits than its factorization.

440432013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180783250.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 440432013121 its reverse (121310234044), we get a palindrome (561742247165).

The spelling of 440432013121 in words is "four hundred forty billion, four hundred thirty-two million, thirteen thousand, one hundred twenty-one".