444023440921 has 2 divisors, whose sum is σ = 444023440922. Its totient is φ = 444023440920.

The previous prime is 444023440837. The next prime is 444023441033. The reversal of 444023440921 is 129044320444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320513367321 + 123510073600 = 566139^2 + 351440^2 .

It is a cyclic number.

It is not a de Polignac number, because 444023440921 - 2⁹ = 444023440409 is a prime.

It is not a weakly prime, because it can be changed into another prime (444023446921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222011720460 + 222011720461.

It is an arithmetic number, because the mean of its divisors is an integer number (222011720461).

Almost surely, 2^444023440921 is an apocalyptic number.

It is an amenable number.

444023440921 is a deficient number, since it is larger than the sum of its proper divisors (1).

444023440921 is an equidigital number, since it uses as much as digits as its factorization.

444023440921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 444023440921 in words is "four hundred forty-four billion, twenty-three million, four hundred forty thousand, nine hundred twenty-one".