440008218978 has 16 divisors (see below), whose sum is σ = 880245238080. Its totient is φ = 146631272976.

The previous prime is 440008218961. The next prime is 440008219019. The reversal of 440008218978 is 879812800044.

It is a self number, because there is not a number n which added to its sum of digits gives 440008218978.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9508333 + ... + 9554496.

It is an arithmetic number, because the mean of its divisors is an integer number (55015327380).

Almost surely, 2^440008218978 is an apocalyptic number.

440008218978 is an abundant number, since it is smaller than the sum of its proper divisors (440237019102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440008218978 is a wasteful number, since it uses less digits than its factorization.

440008218978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19066681.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 440008218978 in words is "four hundred forty billion, eight million, two hundred eighteen thousand, nine hundred seventy-eight".