440067 has 6 divisors (see below), whose sum is σ = 588292. Its totient is φ = 292612.

The previous prime is 440047. The next prime is 440087. The reversal of 440067 is 760044.

It is an interprime number because it is at equal distance from previous prime (440047) and next prime (440087).

It is not a de Polignac number, because 440067 - 2⁸ = 439811 is a prime.

It is a Duffinian number.

440067 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440067.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 958 + ... + 1340.

2⁴⁴⁰⁰⁶⁷ is an apocalyptic number.

440067 is a deficient number, since it is larger than the sum of its proper divisors (148225).

440067 is an frugal number, since it uses more digits than its factorization.

440067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 440067 is about 663.3754592989. The cubic root of 440067 is about 76.0629095922.

The spelling of 440067 in words is "four hundred forty thousand, sixty-seven".