440653 has 2 divisors, whose sum is σ = 440654. Its totient is φ = 440652.

The previous prime is 440651. The next prime is 440669. The reversal of 440653 is 356044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393129 + 47524 = 627^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 440653 - 2¹ = 440651 is a prime.

Together with 440651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440651) 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, 220326 + 220327.

It is an arithmetic number, because the mean of its divisors is an integer number (220327).

2⁴⁴⁰⁶⁵³ is an apocalyptic number.

It is an amenable number.

440653 is a deficient number, since it is larger than the sum of its proper divisors (1).

440653 is an equidigital number, since it uses as much as digits as its factorization.

440653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 440653 is about 663.8169928527. The cubic root of 440653 is about 76.0966567982.

Adding to 440653 its reverse (356044), we get a palindrome (796697).

The spelling of 440653 in words is "four hundred forty thousand, six hundred fifty-three".