440030421443 has 2 divisors, whose sum is σ = 440030421444. Its totient is φ = 440030421442.

The previous prime is 440030421433. The next prime is 440030421503. The reversal of 440030421443 is 344124030044.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440030421443 - 2⁴ = 440030421427 is a prime.

It is not a weakly prime, because it can be changed into another prime (440030421433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220015210721 + 220015210722.

It is an arithmetic number, because the mean of its divisors is an integer number (220015210722).

Almost surely, 2^440030421443 is an apocalyptic number.

440030421443 is a deficient number, since it is larger than the sum of its proper divisors (1).

440030421443 is an equidigital number, since it uses as much as digits as its factorization.

440030421443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 440030421443 its reverse (344124030044), we get a palindrome (784154451487).

The spelling of 440030421443 in words is "four hundred forty billion, thirty million, four hundred twenty-one thousand, four hundred forty-three".