440155 has 8 divisors (see below), whose sum is σ = 539712. Its totient is φ = 344448.

The previous prime is 440131. The next prime is 440159. The reversal of 440155 is 551044.

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

It is a cyclic number.

It is not a de Polignac number, because 440155 - 2¹⁷ = 309083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (67464).

2⁴⁴⁰¹⁵⁵ is an apocalyptic number.

440155 is a deficient number, since it is larger than the sum of its proper divisors (99557).

440155 is a wasteful number, since it uses less digits than its factorization.

440155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 440155 is about 663.4417834294. The cubic root of 440155 is about 76.0679793429.

Adding to 440155 its reverse (551044), we get a palindrome (991199).

Subtracting 440155 from its reverse (551044), we obtain a square (110889 = 333²).

It can be divided in two parts, 440 and 155, that added together give a palindrome (595).

The spelling of 440155 in words is "four hundred forty thousand, one hundred fifty-five".