440447 has 4 divisors (see below), whose sum is σ = 503376. Its totient is φ = 377520.

The previous prime is 440443. The next prime is 440471. The reversal of 440447 is 744044.

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

It is a cyclic number.

It is not a de Polignac number, because 440447 - 2² = 440443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440441) 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, 31454 + ... + 31467.

It is an arithmetic number, because the mean of its divisors is an integer number (125844).

2⁴⁴⁰⁴⁴⁷ is an apocalyptic number.

440447 is a deficient number, since it is larger than the sum of its proper divisors (62929).

440447 is an equidigital number, since it uses as much as digits as its factorization.

440447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62928.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 440447 is about 663.6618114673. The cubic root of 440447 is about 76.0847968580.

The spelling of 440447 in words is "four hundred forty thousand, four hundred forty-seven", and thus it is an iban number.