440549 has 2 divisors, whose sum is σ = 440550. Its totient is φ = 440548.

The previous prime is 440543. The next prime is 440551. The reversal of 440549 is 945044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268324 + 172225 = 518^2 + 415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440549 is a prime.

It is a Sophie Germain prime.

Together with 440551, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon 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 440549.

It is not a weakly prime, because it can be changed into another prime (440543) by changing a digit.

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 as a sum of consecutive naturals, namely, 220274 + 220275.

It is an arithmetic number, because the mean of its divisors is an integer number (220275).

2⁴⁴⁰⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

440549 is a deficient number, since it is larger than the sum of its proper divisors (1).

440549 is an equidigital number, since it uses as much as digits as its factorization.

440549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 440549 is about 663.7386533870. The cubic root of 440549 is about 76.0906697176.

It can be divided in two parts, 440 and 549, that added together give a palindrome (989).

The spelling of 440549 in words is "four hundred forty thousand, five hundred forty-nine".