6443249 has 8 divisors (see below), whose sum is σ = 6821760. Its totient is φ = 6075216.

The previous prime is 6443231. The next prime is 6443287. The reversal of 6443249 is 9423446.

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 6443249 - 2⁸ = 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 (6440249) 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, 1337 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (852720).

Almost surely, 2^6443249 is an apocalyptic number.

It is an amenable number.

6443249 is a deficient number, since it is larger than the sum of its proper divisors (378511).

6443249 is a wasteful number, since it uses less digits than its factorization.

6443249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239.

The product of its digits is 20736, while the sum is 32.

The square root of 6443249 is about 2538.3555700492. The cubic root of 6443249 is about 186.0808316341.

The spelling of 6443249 in words is "six million, four hundred forty-three thousand, two hundred forty-nine".