6749449 has 4 divisors (see below), whose sum is σ = 7713664. Its totient is φ = 5785236.

The previous prime is 6749447. The next prime is 6749521. The reversal of 6749449 is 9449476.

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.

It is a cyclic number.

It is not a de Polignac number, because 6749449 - 2¹ = 6749447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6749443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482097 + ... + 482110.

It is an arithmetic number, because the mean of its divisors is an integer number (1928416).

Almost surely, 2^6749449 is an apocalyptic number.

It is an amenable number.

6749449 is a deficient number, since it is larger than the sum of its proper divisors (964215).

6749449 is an equidigital number, since it uses as much as digits as its factorization.

6749449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964214.

The product of its digits is 217728, while the sum is 43.

The square root of 6749449 is about 2597.9701691898. The cubic root of 6749449 is about 188.9830149999.

The spelling of 6749449 in words is "six million, seven hundred forty-nine thousand, four hundred forty-nine".