449609618 has 8 divisors (see below), whose sum is σ = 685845360. Its totient is φ = 220994500.

The previous prime is 449609617. The next prime is 449609627. The reversal of 449609618 is 816906944.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (449609617) 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, 1905008 + ... + 1905243.

It is an arithmetic number, because the mean of its divisors is an integer number (85730670).

Almost surely, 2^449609618 is an apocalyptic number.

449609618 is a deficient number, since it is larger than the sum of its proper divisors (236235742).

449609618 is a wasteful number, since it uses less digits than its factorization.

449609618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810312.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 449609618 is about 21204.0000471609. Note that the first 4 decimals coincide. The cubic root of 449609618 is about 766.0877731659.

The spelling of 449609618 in words is "four hundred forty-nine million, six hundred nine thousand, six hundred eighteen".