444405469 has 2 divisors, whose sum is σ = 444405470. Its totient is φ = 444405468.

The previous prime is 444405433. The next prime is 444405487. The reversal of 444405469 is 964504444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383768100 + 60637369 = 19590^2 + 7787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444405469 is a prime.

It is a super-2 number, since 2×444405469² = 394992441754219922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444405419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222202734 + 222202735.

It is an arithmetic number, because the mean of its divisors is an integer number (222202735).

Almost surely, 2^444405469 is an apocalyptic number.

It is an amenable number.

444405469 is a deficient number, since it is larger than the sum of its proper divisors (1).

444405469 is an equidigital number, since it uses as much as digits as its factorization.

444405469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 40.

The square root of 444405469 is about 21080.9266636929. The cubic root of 444405469 is about 763.1205198436.

The spelling of 444405469 in words is "four hundred forty-four million, four hundred five thousand, four hundred sixty-nine".