6443009 has 8 divisors (see below), whose sum is σ = 6682368. Its totient is φ = 6205680.

The previous prime is 6442999. The next prime is 6443011. The reversal of 6443009 is 9003446.

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 6443009 - 2⁴ = 6442993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6443909) 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, 9179 + ... + 9855.

It is an arithmetic number, because the mean of its divisors is an integer number (835296).

It is a Proth number, since it is equal to 1573 ⋅ 2¹² + 1 and 1573 < 2¹².

Almost surely, 2^6443009 is an apocalyptic number.

It is an amenable number.

6443009 is a deficient number, since it is larger than the sum of its proper divisors (239359).

6443009 is a wasteful number, since it uses less digits than its factorization.

6443009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 6443009 is about 2538.3082949082. The cubic root of 6443009 is about 186.0785212079.

The spelling of 6443009 in words is "six million, four hundred forty-three thousand, nine".