440043 has 4 divisors (see below), whose sum is σ = 586728. Its totient is φ = 293360.

The previous prime is 440039. The next prime is 440047. The reversal of 440043 is 340044.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (440039) and next prime (440047).

It is a cyclic number.

It is not a de Polignac number, because 440043 - 2² = 440039 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (440047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 73338 + ... + 73343.

It is an arithmetic number, because the mean of its divisors is an integer number (146682).

2⁴⁴⁰⁰⁴³ is an apocalyptic number.

440043 is a deficient number, since it is larger than the sum of its proper divisors (146685).

440043 is a wasteful number, since it uses less digits than its factorization.

440043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146684.

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

The square root of 440043 is about 663.3573697488. The cubic root of 440043 is about 76.0615268157.

Adding to 440043 its reverse (340044), we get a palindrome (780087).

Subtracting from 440043 its reverse (340044), we obtain a palindrome (99999).

The spelling of 440043 in words is "four hundred forty thousand, forty-three", and thus it is an iban number.