6444309 has 8 divisors (see below), whose sum is σ = 9097920. Its totient is φ = 4043456.

The previous prime is 6444299. The next prime is 6444313. The reversal of 6444309 is 9034446.

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 6444309 - 2⁷ = 6444181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444329) 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, 63129 + ... + 63230.

It is an arithmetic number, because the mean of its divisors is an integer number (1137240).

Almost surely, 2^6444309 is an apocalyptic number.

It is an amenable number.

6444309 is a deficient number, since it is larger than the sum of its proper divisors (2653611).

6444309 is a wasteful number, since it uses less digits than its factorization.

6444309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126379.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 6444309 is about 2538.5643580575. The cubic root of 6444309 is about 186.0910353303.

The spelling of 6444309 in words is "six million, four hundred forty-four thousand, three hundred nine".