440272169 has 2 divisors, whose sum is σ = 440272170. Its totient is φ = 440272168.

The previous prime is 440272121. The next prime is 440272181. The reversal of 440272169 is 961272044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229674025 + 210598144 = 15155^2 + 14512^2 .

It is a cyclic number.

It is not a de Polignac number, because 440272169 - 2¹⁶ = 440206633 is a prime.

It is a super-2 number, since 2×440272169² = 387679165591929122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (440272109) 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, 220136084 + 220136085.

It is an arithmetic number, because the mean of its divisors is an integer number (220136085).

Almost surely, 2^440272169 is an apocalyptic number.

It is an amenable number.

440272169 is a deficient number, since it is larger than the sum of its proper divisors (1).

440272169 is an equidigital number, since it uses as much as digits as its factorization.

440272169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 440272169 is about 20982.6635344515. The cubic root of 440272169 is about 760.7472849442.

The spelling of 440272169 in words is "four hundred forty million, two hundred seventy-two thousand, one hundred sixty-nine".