440006 has 16 divisors (see below), whose sum is σ = 769824. Its totient is φ = 184704.

The previous prime is 439991. The next prime is 440009. The reversal of 440006 is 600044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440009) 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, 446 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (48114).

2⁴⁴⁰⁰⁰⁶ is an apocalyptic number.

440006 is a deficient number, since it is larger than the sum of its proper divisors (329818).

440006 is a wasteful number, since it uses less digits than its factorization.

440006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 440006 is about 663.3294807258. The cubic root of 440006 is about 76.0593949366.

The spelling of 440006 in words is "four hundred forty thousand, six".