440406422369 has 2 divisors, whose sum is σ = 440406422370. Its totient is φ = 440406422368.

The previous prime is 440406422341. The next prime is 440406422377. The reversal of 440406422369 is 963224604044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377010736144 + 63395686225 = 614012^2 + 251785^2 .

It is a cyclic number.

It is not a de Polignac number, because 440406422369 - 2²⁴ = 440389645153 is a prime.

It is a super-2 number, since 2×440406422369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440403422369) 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, 220203211184 + 220203211185.

It is an arithmetic number, because the mean of its divisors is an integer number (220203211185).

Almost surely, 2^440406422369 is an apocalyptic number.

It is an amenable number.

440406422369 is a deficient number, since it is larger than the sum of its proper divisors (1).

440406422369 is an equidigital number, since it uses as much as digits as its factorization.

440406422369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 440406422369 in words is "four hundred forty billion, four hundred six million, four hundred twenty-two thousand, three hundred sixty-nine".