449185646 has 24 divisors (see below), whose sum is σ = 844076520. Its totient is φ = 177699312.

The previous prime is 449185591. The next prime is 449185657. The reversal of 449185646 is 646581944.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 449185646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175016 + ... + 177563.

It is an arithmetic number, because the mean of its divisors is an integer number (35169855).

Almost surely, 2^449185646 is an apocalyptic number.

449185646 is a deficient number, since it is larger than the sum of its proper divisors (394890874).

449185646 is a wasteful number, since it uses less digits than its factorization.

449185646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352608 (or 352601 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The square root of 449185646 is about 21194.0002359158. Note that the first 3 decimals coincide. The cubic root of 449185646 is about 765.8468961185.

The spelling of 449185646 in words is "four hundred forty-nine million, one hundred eighty-five thousand, six hundred forty-six".