440667 has 16 divisors (see below), whose sum is σ = 688000. Its totient is φ = 277992.

The previous prime is 440653. The next prime is 440669. The reversal of 440667 is 766044.

It is not a de Polignac number, because 440667 - 2⁴ = 440651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440667.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440667.

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 15 ways as a sum of consecutive naturals, for example, 84 + ... + 942.

It is an arithmetic number, because the mean of its divisors is an integer number (43000).

2⁴⁴⁰⁶⁶⁷ is an apocalyptic number.

440667 is a deficient number, since it is larger than the sum of its proper divisors (247333).

440667 is a wasteful number, since it uses less digits than its factorization.

440667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 440667 is about 663.8275378440. The cubic root of 440667 is about 76.0974626794.

The spelling of 440667 in words is "four hundred forty thousand, six hundred sixty-seven".