449378847 has 10 divisors (see below), whose sum is σ = 671294448. Its totient is φ = 299585844.

The previous prime is 449378789. The next prime is 449378851. The reversal of 449378847 is 748873944.

449378847 is a `hidden beast` number, since 4 + 493 + 78 + 84 + 7 = 666.

It is not a de Polignac number, because 449378847 - 2⁷ = 449378719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449378793 and 449378802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449378857) 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 9 ways as a sum of consecutive naturals, for example, 2773863 + ... + 2774024.

Almost surely, 2^449378847 is an apocalyptic number.

449378847 is a deficient number, since it is larger than the sum of its proper divisors (221915601).

449378847 is an equidigital number, since it uses as much as digits as its factorization.

449378847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547899 (or 5547890 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 449378847 is about 21198.5576631996. The cubic root of 449378847 is about 765.9566808507.

The spelling of 449378847 in words is "four hundred forty-nine million, three hundred seventy-eight thousand, eight hundred forty-seven".