449663847 has 4 divisors (see below), whose sum is σ = 599551800. Its totient is φ = 299775896.

The previous prime is 449663843. The next prime is 449663881. The reversal of 449663847 is 748366944.

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 449663847 - 2² = 449663843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449663847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449663843) 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 3 ways as a sum of consecutive naturals, for example, 74943972 + ... + 74943977.

It is an arithmetic number, because the mean of its divisors is an integer number (149887950).

Almost surely, 2^449663847 is an apocalyptic number.

449663847 is a deficient number, since it is larger than the sum of its proper divisors (149887953).

449663847 is a wasteful number, since it uses less digits than its factorization.

449663847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149887952.

The product of its digits is 3483648, while the sum is 51.

The square root of 449663847 is about 21205.2787531784. The cubic root of 449663847 is about 766.1185721095.

The spelling of 449663847 in words is "four hundred forty-nine million, six hundred sixty-three thousand, eight hundred forty-seven".