440323453 has 2 divisors, whose sum is σ = 440323454. Its totient is φ = 440323452.

The previous prime is 440323447. The next prime is 440323463. The reversal of 440323453 is 354323044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373378329 + 66945124 = 19323^2 + 8182^2 .

It is a cyclic number.

It is not a de Polignac number, because 440323453 - 2⁹ = 440322941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440323463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220161726 + 220161727.

It is an arithmetic number, because the mean of its divisors is an integer number (220161727).

Almost surely, 2^440323453 is an apocalyptic number.

It is an amenable number.

440323453 is a deficient number, since it is larger than the sum of its proper divisors (1).

440323453 is an equidigital number, since it uses as much as digits as its factorization.

440323453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 440323453 is about 20983.8855553494. The cubic root of 440323453 is about 760.7768217109.

Adding to 440323453 its reverse (354323044), we get a palindrome (794646497).

The spelling of 440323453 in words is "four hundred forty million, three hundred twenty-three thousand, four hundred fifty-three".