1305000449 has 4 divisors (see below), whose sum is σ = 1332766464. Its totient is φ = 1277234436.

The previous prime is 1305000401. The next prime is 1305000481. The reversal of 1305000449 is 9440005031.

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: 9440005031 = 239 ⋅39497929.

It is a cyclic number.

It is not a de Polignac number, because 1305000449 - 2¹² = 1304996353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305006449) 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, 13882937 + ... + 13883030.

It is an arithmetic number, because the mean of its divisors is an integer number (333191616).

Almost surely, 2^1305000449 is an apocalyptic number.

It is an amenable number.

1305000449 is a deficient number, since it is larger than the sum of its proper divisors (27766015).

1305000449 is an equidigital number, since it uses as much as digits as its factorization.

1305000449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27766014.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1305000449 is about 36124.7899509464. The cubic root of 1305000449 is about 1092.7904399844.

The spelling of 1305000449 in words is "one billion, three hundred five million, four hundred forty-nine", and thus it is an aban number.