449632909439 has 4 divisors (see below), whose sum is σ = 513866182224. Its totient is φ = 385399636656.

The previous prime is 449632909391. The next prime is 449632909511. The reversal of 449632909439 is 934909236944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 449632909439 - 2²⁰ = 449631860863 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 (449632909039) 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, 32116636382 + ... + 32116636395.

It is an arithmetic number, because the mean of its divisors is an integer number (128466545556).

Almost surely, 2^449632909439 is an apocalyptic number.

449632909439 is a deficient number, since it is larger than the sum of its proper divisors (64233272785).

449632909439 is an equidigital number, since it uses as much as digits as its factorization.

449632909439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64233272784.

The product of its (nonzero) digits is 45349632, while the sum is 62.

The spelling of 449632909439 in words is "four hundred forty-nine billion, six hundred thirty-two million, nine hundred nine thousand, four hundred thirty-nine".