440007 has 4 divisors (see below), whose sum is σ = 586680. Its totient is φ = 293336.

The previous prime is 439991. The next prime is 440009. The reversal of 440007 is 700044.

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 440007 - 2⁴ = 439991 is a prime.

It is an Ulam number.

It is a D-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 440007.

It is not an unprimeable number, because it can be changed into a prime (440009) 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, 73332 + ... + 73337.

It is an arithmetic number, because the mean of its divisors is an integer number (146670).

2⁴⁴⁰⁰⁰⁷ is an apocalyptic number.

440007 is a deficient number, since it is larger than the sum of its proper divisors (146673).

440007 is a wasteful number, since it uses less digits than its factorization.

440007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146672.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 440007 is about 663.3302344986. The cubic root of 440007 is about 76.0594525565.

The spelling of 440007 in words is "four hundred forty thousand, seven", and thus it is an iban number.