440443217 has 2 divisors, whose sum is σ = 440443218. Its totient is φ = 440443216.

The previous prime is 440443189. The next prime is 440443229. The reversal of 440443217 is 712344044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419061841 + 21381376 = 20471^2 + 4624^2 .

It is a cyclic number.

It is not a de Polignac number, because 440443217 - 2²⁸ = 172007761 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440443217.

It is not a weakly prime, because it can be changed into another prime (440443277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220221608 + 220221609.

It is an arithmetic number, because the mean of its divisors is an integer number (220221609).

Almost surely, 2^440443217 is an apocalyptic number.

It is an amenable number.

440443217 is a deficient number, since it is larger than the sum of its proper divisors (1).

440443217 is an equidigital number, since it uses as much as digits as its factorization.

440443217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 440443217 is about 20986.7390749492. The cubic root of 440443217 is about 760.8457902652.

The spelling of 440443217 in words is "four hundred forty million, four hundred forty-three thousand, two hundred seventeen".