441689985 has 48 divisors (see below), whose sum is σ = 843897600. Its totient is φ = 211921920.

The previous prime is 441689977. The next prime is 441690013. The reversal of 441689985 is 589986144.

It is not a de Polignac number, because 441689985 - 2³ = 441689977 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43416 + ... + 52614.

It is an arithmetic number, because the mean of its divisors is an integer number (17581200).

Almost surely, 2^441689985 is an apocalyptic number.

441689985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

441689985 is a deficient number, since it is larger than the sum of its proper divisors (402207615).

441689985 is a wasteful number, since it uses less digits than its factorization.

441689985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9318 (or 9315 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 441689985 is about 21016.4217934452. The cubic root of 441689985 is about 761.5630257552.

The spelling of 441689985 in words is "four hundred forty-one million, six hundred eighty-nine thousand, nine hundred eighty-five".