444371309 has 8 divisors (see below), whose sum is σ = 450398520. Its totient is φ = 438379776.

The previous prime is 444371273. The next prime is 444371311. The reversal of 444371309 is 903173444.

It can be written as a sum of positive squares in 4 ways, for example, as 426409 + 443944900 = 653^2 + 21070^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444371309 - 2¹⁶ = 444305773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444371359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16649 + ... + 34145.

It is an arithmetic number, because the mean of its divisors is an integer number (56299815).

Almost surely, 2^444371309 is an apocalyptic number.

It is an amenable number.

444371309 is a deficient number, since it is larger than the sum of its proper divisors (6027211).

444371309 is a wasteful number, since it uses less digits than its factorization.

444371309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17839.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 444371309 is about 21080.1164370598. The cubic root of 444371309 is about 763.1009664802.

The spelling of 444371309 in words is "four hundred forty-four million, three hundred seventy-one thousand, three hundred nine".