442220399985 has 64 divisors (see below), whose sum is σ = 922059597312. Its totient is φ = 175630381056.

The previous prime is 442220399981. The next prime is 442220399987. The reversal of 442220399985 is 589993022244.

It is not a de Polignac number, because 442220399985 - 2² = 442220399981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442220399981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9505354 + ... + 9551763.

It is an arithmetic number, because the mean of its divisors is an integer number (14407181208).

Almost surely, 2^442220399985 is an apocalyptic number.

It is an amenable number.

442220399985 is an abundant number, since it is smaller than the sum of its proper divisors (479839197327).

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

442220399985 is a wasteful number, since it uses less digits than its factorization.

442220399985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19057162.

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 442220399985 in words is "four hundred forty-two billion, two hundred twenty million, three hundred ninety-nine thousand, nine hundred eighty-five".