440651 has 2 divisors, whose sum is σ = 440652. Its totient is φ = 440650.

The previous prime is 440641. The next prime is 440653. The reversal of 440651 is 156044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440651 - 2¹⁴ = 424267 is a prime.

Together with 440653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440653) 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, 220325 + 220326.

It is an arithmetic number, because the mean of its divisors is an integer number (220326).

2⁴⁴⁰⁶⁵¹ is an apocalyptic number.

440651 is a deficient number, since it is larger than the sum of its proper divisors (1).

440651 is an equidigital number, since it uses as much as digits as its factorization.

440651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 440651 is about 663.8154864117. The cubic root of 440651 is about 76.0965416709.

Adding to 440651 its reverse (156044), we get a palindrome (596695).

The spelling of 440651 in words is "four hundred forty thousand, six hundred fifty-one".