449223609 has 4 divisors (see below), whose sum is σ = 598964816. Its totient is φ = 299482404.

The previous prime is 449223571. The next prime is 449223611. The reversal of 449223609 is 906322944.

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 449223609 - 2⁸ = 449223353 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 (449423609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74870599 + ... + 74870604.

It is an arithmetic number, because the mean of its divisors is an integer number (149741204).

Almost surely, 2^449223609 is an apocalyptic number.

It is an amenable number.

449223609 is a deficient number, since it is larger than the sum of its proper divisors (149741207).

449223609 is a wasteful number, since it uses less digits than its factorization.

449223609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149741206.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 449223609 is about 21194.8958242309. The cubic root of 449223609 is about 765.8684707368.

The spelling of 449223609 in words is "four hundred forty-nine million, two hundred twenty-three thousand, six hundred nine".