440441069 has 2 divisors, whose sum is σ = 440441070. Its totient is φ = 440441068.

The previous prime is 440441059. The next prime is 440441119. The reversal of 440441069 is 960144044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311346025 + 129095044 = 17645^2 + 11362^2 .

It is a cyclic number.

It is not a de Polignac number, because 440441069 - 2⁸ = 440440813 is a prime.

It is a super-2 number, since 2×440441069² = 387976670523725522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440441039) 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, 220220534 + 220220535.

It is an arithmetic number, because the mean of its divisors is an integer number (220220535).

Almost surely, 2^440441069 is an apocalyptic number.

It is an amenable number.

440441069 is a deficient number, since it is larger than the sum of its proper divisors (1).

440441069 is an equidigital number, since it uses as much as digits as its factorization.

440441069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 440441069 is about 20986.6878997140. The cubic root of 440441069 is about 760.8445534055.

The spelling of 440441069 in words is "four hundred forty million, four hundred forty-one thousand, sixty-nine".