440212013 has 2 divisors, whose sum is σ = 440212014. Its totient is φ = 440212012.

The previous prime is 440211983. The next prime is 440212037. The reversal of 440212013 is 310212044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438776809 + 1435204 = 20947^2 + 1198^2 .

It is a cyclic number.

It is not a de Polignac number, because 440212013 - 2⁸ = 440211757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440211982 and 440212000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440212813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220106006 + 220106007.

It is an arithmetic number, because the mean of its divisors is an integer number (220106007).

Almost surely, 2^440212013 is an apocalyptic number.

It is an amenable number.

440212013 is a deficient number, since it is larger than the sum of its proper divisors (1).

440212013 is an equidigital number, since it uses as much as digits as its factorization.

440212013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 440212013 is about 20981.2300163742. The cubic root of 440212013 is about 760.7126354696.

Adding to 440212013 its reverse (310212044), we get a palindrome (750424057).

The spelling of 440212013 in words is "four hundred forty million, two hundred twelve thousand, thirteen".