440424040009 has 4 divisors (see below), whose sum is σ = 442857322180. Its totient is φ = 437990757840.

The previous prime is 440424039997. The next prime is 440424040019. The reversal of 440424040009 is 900040424044.

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 143838147600 + 296585892409 = 379260^2 + 544597^2 .

It is a cyclic number.

It is not a de Polignac number, because 440424040009 - 2²⁷ = 440289822281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440424040019) 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, 1216640814 + ... + 1216641175.

It is an arithmetic number, because the mean of its divisors is an integer number (110714330545).

Almost surely, 2^440424040009 is an apocalyptic number.

It is an amenable number.

440424040009 is a deficient number, since it is larger than the sum of its proper divisors (2433282171).

440424040009 is a wasteful number, since it uses less digits than its factorization.

440424040009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433282170.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 440424040009 in words is "four hundred forty billion, four hundred twenty-four million, forty thousand, nine".