442888985 has 32 divisors (see below), whose sum is σ = 664215552. Its totient is φ = 275417280.

The previous prime is 442888933. The next prime is 442888991. The reversal of 442888985 is 589888244.

It is not a de Polignac number, because 442888985 - 2²⁰ = 441840409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442888985.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192512 + ... + 194798.

It is an arithmetic number, because the mean of its divisors is an integer number (20756736).

Almost surely, 2^442888985 is an apocalyptic number.

It is an amenable number.

442888985 is a deficient number, since it is larger than the sum of its proper divisors (221326567).

442888985 is a wasteful number, since it uses less digits than its factorization.

442888985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813.

The product of its digits is 5898240, while the sum is 56.

The square root of 442888985 is about 21044.9277736941. The cubic root of 442888985 is about 762.2515094611.

The spelling of 442888985 in words is "four hundred forty-two million, eight hundred eighty-eight thousand, nine hundred eighty-five".