440445354313 has 4 divisors (see below), whose sum is σ = 441426302100. Its totient is φ = 439464406528.

The previous prime is 440445354311. The next prime is 440445354319. The reversal of 440445354313 is 313453544044.

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 233590489344 + 206854864969 = 483312^2 + 454813^2 .

It is a cyclic number.

It is not a de Polignac number, because 440445354313 - 2¹ = 440445354311 is a prime.

It is a super-2 number, since 2×440445354313² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440445354311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490473220 + ... + 490474117.

It is an arithmetic number, because the mean of its divisors is an integer number (110356575525).

Almost surely, 2^440445354313 is an apocalyptic number.

It is an amenable number.

440445354313 is a deficient number, since it is larger than the sum of its proper divisors (980947787).

440445354313 is an equidigital number, since it uses as much as digits as its factorization.

440445354313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980947786.

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 440445354313 its reverse (313453544044), we get a palindrome (753898898357).

The spelling of 440445354313 in words is "four hundred forty billion, four hundred forty-five million, three hundred fifty-four thousand, three hundred thirteen".