440634 has 32 divisors (see below), whose sum is σ = 958464. Its totient is φ = 134640.

The previous prime is 440581. The next prime is 440641. The reversal of 440634 is 436044.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 440634.

It is an unprimeable number.

440634 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 4227 + ... + 4329.

It is an arithmetic number, because the mean of its divisors is an integer number (29952).

2⁴⁴⁰⁶³⁴ is an apocalyptic number.

440634 is an abundant number, since it is smaller than the sum of its proper divisors (517830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440634 is a wasteful number, since it uses less digits than its factorization.

440634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 440634 is about 663.8026815252. The cubic root of 440634 is about 76.0955630749.

Adding to 440634 its reverse (436044), we get a palindrome (876678).

The spelling of 440634 in words is "four hundred forty thousand, six hundred thirty-four".