6438449 has 4 divisors (see below), whose sum is σ = 6449664. Its totient is φ = 6427236.

The previous prime is 6438437. The next prime is 6438457. The reversal of 6438449 is 9448346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9448346 = 2 ⋅4724173.

It is a cyclic number.

It is not a de Polignac number, because 6438449 - 2⁸ = 6438193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438409) 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, 4697 + ... + 5910.

It is an arithmetic number, because the mean of its divisors is an integer number (1612416).

Almost surely, 2^6438449 is an apocalyptic number.

It is an amenable number.

6438449 is a deficient number, since it is larger than the sum of its proper divisors (11215).

6438449 is a wasteful number, since it uses less digits than its factorization.

6438449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11214.

The product of its digits is 82944, while the sum is 38.

The square root of 6438449 is about 2537.4098998782. The cubic root of 6438449 is about 186.0346122044.

The spelling of 6438449 in words is "six million, four hundred thirty-eight thousand, four hundred forty-nine".