449309 has 4 divisors (see below), whose sum is σ = 513504. Its totient is φ = 385116.

The previous prime is 449303. The next prime is 449311. The reversal of 449309 is 903944.

449309 = 386² + 387² + 388².

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 449309.

It is not an unprimeable number, because it can be changed into a prime (449303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32087 + ... + 32100.

It is an arithmetic number, because the mean of its divisors is an integer number (128376).

2⁴⁴⁹³⁰⁹ is an apocalyptic number.

It is an amenable number.

449309 is a deficient number, since it is larger than the sum of its proper divisors (64195).

449309 is an equidigital number, since it uses as much as digits as its factorization.

449309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64194.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 449309 is about 670.3051543887. The cubic root of 449309 is about 76.5916994553.

The spelling of 449309 in words is "four hundred forty-nine thousand, three hundred nine".