2448309 has 4 divisors (see below), whose sum is σ = 3264416. Its totient is φ = 1632204.

The previous prime is 2448269. The next prime is 2448311. The reversal of 2448309 is 9038442.

It is a happy number.

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 not a de Polignac number, because 2448309 - 2⁷ = 2448181 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2448379) 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, 408049 + ... + 408054.

It is an arithmetic number, because the mean of its divisors is an integer number (816104).

2^2448309 is an apocalyptic number.

It is an amenable number.

2448309 is a deficient number, since it is larger than the sum of its proper divisors (816107).

2448309 is an equidigital number, since it uses as much as digits as its factorization.

2448309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816106.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2448309 is about 1564.7073208751. The cubic root of 2448309 is about 134.7789523854.

The spelling of 2448309 in words is "two million, four hundred forty-eight thousand, three hundred nine".