444307489 has 2 divisors, whose sum is σ = 444307490. Its totient is φ = 444307488.

The previous prime is 444307477. The next prime is 444307547. The reversal of 444307489 is 984703444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385140625 + 59166864 = 19625^2 + 7692^2 .

It is a cyclic number.

It is not a de Polignac number, because 444307489 - 2⁷ = 444307361 is a prime.

It is not a weakly prime, because it can be changed into another prime (444307459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222153744 + 222153745.

It is an arithmetic number, because the mean of its divisors is an integer number (222153745).

Almost surely, 2^444307489 is an apocalyptic number.

It is an amenable number.

444307489 is a deficient number, since it is larger than the sum of its proper divisors (1).

444307489 is an equidigital number, since it uses as much as digits as its factorization.

444307489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 444307489 is about 21078.6026339509. The cubic root of 444307489 is about 763.0644328919.

The spelling of 444307489 in words is "four hundred forty-four million, three hundred seven thousand, four hundred eighty-nine".