442988865 has 96 divisors (see below), whose sum is σ = 885588480. Its totient is φ = 209848320.

The previous prime is 442988863. The next prime is 442988879. The reversal of 442988865 is 568889244.

It is not a de Polignac number, because 442988865 - 2¹ = 442988863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442988863) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 767457 + ... + 768033.

It is an arithmetic number, because the mean of its divisors is an integer number (9224880).

Almost surely, 2^442988865 is an apocalyptic number.

442988865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

442988865 is a deficient number, since it is larger than the sum of its proper divisors (442599615).

442988865 is a wasteful number, since it uses less digits than its factorization.

442988865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 643 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 442988865 is about 21047.3006582792. The cubic root of 442988865 is about 762.3088059551.

The spelling of 442988865 in words is "four hundred forty-two million, nine hundred eighty-eight thousand, eight hundred sixty-five".