440663 has 4 divisors (see below), whose sum is σ = 445128. Its totient is φ = 436200.

The previous prime is 440653. The next prime is 440669. The reversal of 440663 is 366044.

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 440663 - 2¹⁰ = 439639 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 (440669) 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, 2081 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (111282).

2⁴⁴⁰⁶⁶³ is an apocalyptic number.

440663 is a deficient number, since it is larger than the sum of its proper divisors (4465).

440663 is a wasteful number, since it uses less digits than its factorization.

440663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 440663 is about 663.8245250064. The cubic root of 440663 is about 76.0972324293.

The spelling of 440663 in words is "four hundred forty thousand, six hundred sixty-three".