440143013 has 2 divisors, whose sum is σ = 440143014. Its totient is φ = 440143012.

The previous prime is 440143007. The next prime is 440143027. The reversal of 440143013 is 310341044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396886084 + 43256929 = 19922^2 + 6577^2 .

It is a cyclic number.

It is not a de Polignac number, because 440143013 - 2¹⁸ = 439880869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440143043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220071506 + 220071507.

It is an arithmetic number, because the mean of its divisors is an integer number (220071507).

Almost surely, 2^440143013 is an apocalyptic number.

It is an amenable number.

440143013 is a deficient number, since it is larger than the sum of its proper divisors (1).

440143013 is an equidigital number, since it uses as much as digits as its factorization.

440143013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 440143013 is about 20979.5856250785. The cubic root of 440143013 is about 760.6728880199.

Adding to 440143013 its reverse (310341044), we get a palindrome (750484057).

The spelling of 440143013 in words is "four hundred forty million, one hundred forty-three thousand, thirteen".