440608686829 has 4 divisors (see below), whose sum is σ = 442532742460. Its totient is φ = 438684631200.

The previous prime is 440608686751. The next prime is 440608686887. The reversal of 440608686829 is 928686806044.

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 301499828100 + 139108858729 = 549090^2 + 372973^2 .

It is a cyclic number.

It is not a de Polignac number, because 440608686829 - 2²³ = 440600298221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440608687829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962027472 + ... + 962027929.

It is an arithmetic number, because the mean of its divisors is an integer number (110633185615).

Almost surely, 2^440608686829 is an apocalyptic number.

It is an amenable number.

440608686829 is a deficient number, since it is larger than the sum of its proper divisors (1924055631).

440608686829 is a wasteful number, since it uses less digits than its factorization.

440608686829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924055630.

The product of its (nonzero) digits is 31850496, while the sum is 61.

The spelling of 440608686829 in words is "four hundred forty billion, six hundred eight million, six hundred eighty-six thousand, eight hundred twenty-nine".