440030421427 has 2 divisors, whose sum is σ = 440030421428. Its totient is φ = 440030421426.

The previous prime is 440030421379. The next prime is 440030421431. The reversal of 440030421427 is 724124030044.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440030421427 is a prime.

It is not a weakly prime, because it can be changed into another prime (440030425427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220015210713 + 220015210714.

It is an arithmetic number, because the mean of its divisors is an integer number (220015210714).

Almost surely, 2^440030421427 is an apocalyptic number.

440030421427 is a deficient number, since it is larger than the sum of its proper divisors (1).

440030421427 is an equidigital number, since it uses as much as digits as its factorization.

440030421427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 440030421427 in words is "four hundred forty billion, thirty million, four hundred twenty-one thousand, four hundred twenty-seven".