440641 has 2 divisors, whose sum is σ = 440642. Its totient is φ = 440640.

The previous prime is 440581. The next prime is 440651. The reversal of 440641 is 146044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 5041 = 660^2 + 71^2 .

It is a cyclic number.

It is not a de Polignac number, because 440641 - 2¹³ = 432449 is a prime.

It is not a weakly prime, because it can be changed into another prime (440651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220320 + 220321.

It is an arithmetic number, because the mean of its divisors is an integer number (220321).

2⁴⁴⁰⁶⁴¹ is an apocalyptic number.

It is an amenable number.

440641 is a deficient number, since it is larger than the sum of its proper divisors (1).

440641 is an equidigital number, since it uses as much as digits as its factorization.

440641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 440641 is about 663.8079541554. The cubic root of 440641 is about 76.0959660293.

Adding to 440641 its reverse (146044), we get a palindrome (586685).

It can be divided in two parts, 440 and 641, that added together give a triangular number (1081 = T₄₆).

The spelling of 440641 in words is "four hundred forty thousand, six hundred forty-one".