440455 has 8 divisors (see below), whose sum is σ = 533232. Its totient is φ = 349248.

The previous prime is 440443. The next prime is 440471. The reversal of 440455 is 554044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440455 is a prime.

It is a Duffinian number.

440455 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (66654).

2⁴⁴⁰⁴⁵⁵ is an apocalyptic number.

440455 is a deficient number, since it is larger than the sum of its proper divisors (92777).

440455 is a wasteful number, since it uses less digits than its factorization.

440455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 440455 is about 663.6678386060. The cubic root of 440455 is about 76.0852575072.

Adding to 440455 its reverse (554044), we get a palindrome (994499).

The spelling of 440455 in words is "four hundred forty thousand, four hundred fifty-five".