442345531444 has 48 divisors (see below), whose sum is σ = 806787072000. Its totient is φ = 212067783936.

The previous prime is 442345531399. The next prime is 442345531457. The reversal of 442345531444 is 444135543244.

It is a self number, because there is not a number n which added to its sum of digits gives 442345531444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1936717 + ... + 2153035.

It is an arithmetic number, because the mean of its divisors is an integer number (16808064000).

Almost surely, 2^442345531444 is an apocalyptic number.

It is an amenable number.

442345531444 is a deficient number, since it is larger than the sum of its proper divisors (364441540556).

442345531444 is a wasteful number, since it uses less digits than its factorization.

442345531444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216592 (or 216590 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 43.

The spelling of 442345531444 in words is "four hundred forty-two billion, three hundred forty-five million, five hundred thirty-one thousand, four hundred forty-four".