449817550 has 144 divisors (see below), whose sum is σ = 1086492960. Its totient is φ = 137168640.

The previous prime is 449817541. The next prime is 449817551. The reversal of 449817550 is 55718944.

It is a junction number, because it is equal to n+sod(n) for n = 449817497 and 449817506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449817551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 923407 + ... + 923893.

It is an arithmetic number, because the mean of its divisors is an integer number (7545090).

Almost surely, 2^449817550 is an apocalyptic number.

449817550 is an abundant number, since it is smaller than the sum of its proper divisors (636675410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449817550 is a wasteful number, since it uses less digits than its factorization.

449817550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 449817550 is about 21208.9026118750. The cubic root of 449817550 is about 766.2058530930.

The spelling of 449817550 in words is "four hundred forty-nine million, eight hundred seventeen thousand, five hundred fifty".