440448404871 has 4 divisors (see below), whose sum is σ = 587264539832. Its totient is φ = 293632269912.

The previous prime is 440448404857. The next prime is 440448404897. The reversal of 440448404871 is 178404844044.

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

It is not a de Polignac number, because 440448404871 - 2¹⁰ = 440448403847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440448404871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440448404801) 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, 73408067476 + ... + 73408067481.

It is an arithmetic number, because the mean of its divisors is an integer number (146816134958).

Almost surely, 2^440448404871 is an apocalyptic number.

440448404871 is a deficient number, since it is larger than the sum of its proper divisors (146816134961).

440448404871 is a wasteful number, since it uses less digits than its factorization.

440448404871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146816134960.

The product of its (nonzero) digits is 1835008, while the sum is 48.

The spelling of 440448404871 in words is "four hundred forty billion, four hundred forty-eight million, four hundred four thousand, eight hundred seventy-one".