444603689 has 4 divisors (see below), whose sum is σ = 445079124. Its totient is φ = 444128256.

The previous prime is 444603673. The next prime is 444603751. The reversal of 444603689 is 986306444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198584464 + 246019225 = 14092^2 + 15685^2 .

It is a cyclic number.

It is not a de Polignac number, because 444603689 - 2⁴ = 444603673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444603619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236312 + ... + 238185.

It is an arithmetic number, because the mean of its divisors is an integer number (111269781).

Almost surely, 2^444603689 is an apocalyptic number.

It is an amenable number.

444603689 is a deficient number, since it is larger than the sum of its proper divisors (475435).

444603689 is an equidigital number, since it uses as much as digits as its factorization.

444603689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475434.

The product of its (nonzero) digits is 497664, while the sum is 44.

The square root of 444603689 is about 21085.6275457953. The cubic root of 444603689 is about 763.2339622407.

The spelling of 444603689 in words is "four hundred forty-four million, six hundred three thousand, six hundred eighty-nine".