442640682444 has 24 divisors (see below), whose sum is σ = 1038235742208. Its totient is φ = 146774396560.

The previous prime is 442640682443. The next prime is 442640682479. The reversal of 442640682444 is 444286046244.

It is a junction number, because it is equal to n+sod(n) for n = 442640682393 and 442640682402.

It is not an unprimeable number, because it can be changed into a prime (442640682443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96559812 + ... + 96564395.

It is an arithmetic number, because the mean of its divisors is an integer number (43259822592).

Almost surely, 2^442640682444 is an apocalyptic number.

It is an amenable number.

442640682444 is an abundant number, since it is smaller than the sum of its proper divisors (595595059764).

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

442640682444 is a wasteful number, since it uses less digits than its factorization.

442640682444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193124405 (or 193124403 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 48.

The spelling of 442640682444 in words is "four hundred forty-two billion, six hundred forty million, six hundred eighty-two thousand, four hundred forty-four".