440430 has 32 divisors (see below), whose sum is σ = 1080864. Its totient is φ = 114816.

The previous prime is 440399. The next prime is 440431. The reversal of 440430 is 34044.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440431) by changing a digit.

440430 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, 1452 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (33777).

2⁴⁴⁰⁴³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540432).

440430 is an abundant number, since it is smaller than the sum of its proper divisors (640434).

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

440430 is a wasteful number, since it uses less digits than its factorization.

440430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 440430 is about 663.6490036156. The cubic root of 440430 is about 76.0838179599.

Adding to 440430 its reverse (34044), we get a palindrome (474474).

The spelling of 440430 in words is "four hundred forty thousand, four hundred thirty".