440247 has 4 divisors (see below), whose sum is σ = 587000. Its totient is φ = 293496.

The previous prime is 440239. The next prime is 440261. The reversal of 440247 is 742044.

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

It is not a de Polignac number, because 440247 - 2³ = 440239 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440247.

It is not an unprimeable number, because it can be changed into a prime (440207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73372 + ... + 73377.

It is an arithmetic number, because the mean of its divisors is an integer number (146750).

2⁴⁴⁰²⁴⁷ is an apocalyptic number.

440247 is a deficient number, since it is larger than the sum of its proper divisors (146753).

440247 is a wasteful number, since it uses less digits than its factorization.

440247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146752.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 440247 is about 663.5111152046. The cubic root of 440247 is about 76.0732788144.

The spelling of 440247 in words is "four hundred forty thousand, two hundred forty-seven", and thus it is an iban number.