440145 has 12 divisors (see below), whose sum is σ = 762996. Its totient is φ = 234720.

The previous prime is 440131. The next prime is 440159. The reversal of 440145 is 541044.

It is an interprime number because it is at equal distance from previous prime (440131) and next prime (440159).

It can be written as a sum of positive squares in 2 ways, for example, as 173889 + 266256 = 417^2 + 516^2 .

It is not a de Polignac number, because 440145 - 2¹⁵ = 407377 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4846 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (63583).

2⁴⁴⁰¹⁴⁵ is an apocalyptic number.

440145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440145 is a deficient number, since it is larger than the sum of its proper divisors (322851).

440145 is a wasteful number, since it uses less digits than its factorization.

440145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792 (or 9789 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 440145 is about 663.4342469303. The cubic root of 440145 is about 76.0674032689.

Adding to 440145 its reverse (541044), we get a palindrome (981189).

It can be divided in two parts, 440 and 145, that added together give a palindrome (585).

The spelling of 440145 in words is "four hundred forty thousand, one hundred forty-five".