440889 has 8 divisors (see below), whose sum is σ = 591072. Its totient is φ = 292320.

The previous prime is 440863. The next prime is 440893. The reversal of 440889 is 988044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440889 - 2⁷ = 440761 is a prime.

It is a super-2 number, since 2×440889² = 388766220642, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440889.

It is not an unprimeable number, because it can be changed into a prime (440809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582 + ... + 1104.

It is an arithmetic number, because the mean of its divisors is an integer number (73884).

2⁴⁴⁰⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

440889 is a deficient number, since it is larger than the sum of its proper divisors (150183).

440889 is a wasteful number, since it uses less digits than its factorization.

440889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 440889 is about 663.9947288947. The cubic root of 440889 is about 76.1102393721.

The spelling of 440889 in words is "four hundred forty thousand, eight hundred eighty-nine".