440009225891 has 2 divisors, whose sum is σ = 440009225892. Its totient is φ = 440009225890.

The previous prime is 440009225879. The next prime is 440009225963. The reversal of 440009225891 is 198522900044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440009225891 - 2¹⁰ = 440009224867 is a prime.

It is not a weakly prime, because it can be changed into another prime (440009221891) 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, 220004612945 + 220004612946.

It is an arithmetic number, because the mean of its divisors is an integer number (220004612946).

Almost surely, 2^440009225891 is an apocalyptic number.

440009225891 is a deficient number, since it is larger than the sum of its proper divisors (1).

440009225891 is an equidigital number, since it uses as much as digits as its factorization.

440009225891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 440009225891 in words is "four hundred forty billion, nine million, two hundred twenty-five thousand, eight hundred ninety-one".