449736849 has 9 divisors (see below), whose sum is σ = 649711803. Its totient is φ = 299782152.

The previous prime is 449736841. The next prime is 449736869. The reversal of 449736849 is 948637944.

It is a happy number.

The square root of 449736849 is 21207.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 157326849 + 292410000 = 12543^2 + 17100^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 449736849 - 2³ = 449736841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449736795 and 449736804.

It is not an unprimeable number, because it can be changed into a prime (449736841) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 60087 + ... + 67155.

Almost surely, 2^449736849 is an apocalyptic number.

449736849 is the 21207-th square number.

449736849 is the 10604-th centered octagonal number.

It is an amenable number.

449736849 is a deficient number, since it is larger than the sum of its proper divisors (199974954).

449736849 is an frugal number, since it uses more digits than its factorization.

449736849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14144 (or 7072 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The cubic root of 449736849 is about 766.1600291238.

The spelling of 449736849 in words is "four hundred forty-nine million, seven hundred thirty-six thousand, eight hundred forty-nine".