440121233 has 2 divisors, whose sum is σ = 440121234. Its totient is φ = 440121232.

The previous prime is 440121223. The next prime is 440121257. The reversal of 440121233 is 332121044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418284304 + 21836929 = 20452^2 + 4673^2 .

It is a cyclic number.

It is not a de Polignac number, because 440121233 - 2⁴ = 440121217 is a prime.

It is not a weakly prime, because it can be changed into another prime (440121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220060616 + 220060617.

It is an arithmetic number, because the mean of its divisors is an integer number (220060617).

Almost surely, 2^440121233 is an apocalyptic number.

It is an amenable number.

440121233 is a deficient number, since it is larger than the sum of its proper divisors (1).

440121233 is an equidigital number, since it uses as much as digits as its factorization.

440121233 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 440121233 is about 20979.0665426277. The cubic root of 440121233 is about 760.6603407884.

Adding to 440121233 its reverse (332121044), we get a palindrome (772242277).

The spelling of 440121233 in words is "four hundred forty million, one hundred twenty-one thousand, two hundred thirty-three".