6448109 has 4 divisors (see below), whose sum is σ = 6510816. Its totient is φ = 6385404.

The previous prime is 6448103. The next prime is 6448133. The reversal of 6448109 is 9018446.

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: 9018446 = 2 ⋅4509223.

It is a cyclic number.

It is not a de Polignac number, because 6448109 - 2⁸ = 6447853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448103) 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, 31199 + ... + 31404.

It is an arithmetic number, because the mean of its divisors is an integer number (1627704).

Almost surely, 2^6448109 is an apocalyptic number.

It is an amenable number.

6448109 is a deficient number, since it is larger than the sum of its proper divisors (62707).

6448109 is a wasteful number, since it uses less digits than its factorization.

6448109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62706.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6448109 is about 2539.3127022878. The cubic root of 6448109 is about 186.1276054257.

The spelling of 6448109 in words is "six million, four hundred forty-eight thousand, one hundred nine".