444403434509 has 2 divisors, whose sum is σ = 444403434510. Its totient is φ = 444403434508.

The previous prime is 444403434301. The next prime is 444403434523. The reversal of 444403434509 is 905434304444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272219932009 + 172183502500 = 521747^2 + 414950^2 .

It is a cyclic number.

It is not a de Polignac number, because 444403434509 - 2²⁸ = 444134999053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444403434509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444403434809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222201717254 + 222201717255.

It is an arithmetic number, because the mean of its divisors is an integer number (222201717255).

Almost surely, 2^444403434509 is an apocalyptic number.

It is an amenable number.

444403434509 is a deficient number, since it is larger than the sum of its proper divisors (1).

444403434509 is an equidigital number, since it uses as much as digits as its factorization.

444403434509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 444403434509 in words is "four hundred forty-four billion, four hundred three million, four hundred thirty-four thousand, five hundred nine".