440030 has 16 divisors (see below), whose sum is σ = 803520. Its totient is φ = 173472.

The previous prime is 440023. The next prime is 440039. The reversal of 440030 is 30044.

It is a junction number, because it is equal to n+sod(n) for n = 439993 and 440020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440039) by changing a digit.

440030 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (50220).

2⁴⁴⁰⁰³⁰ is an apocalyptic number.

440030 is a deficient number, since it is larger than the sum of its proper divisors (363490).

440030 is a wasteful number, since it uses less digits than its factorization.

440030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 440030 is about 663.3475710365. The cubic root of 440030 is about 76.0607777907.

Adding to 440030 its reverse (30044), we get a palindrome (470074).

The spelling of 440030 in words is "four hundred forty thousand, thirty".