449249190 has 128 divisors (see below), whose sum is σ = 1206116352. Its totient is φ = 106375680.

The previous prime is 449249161. The next prime is 449249209. The reversal of 449249190 is 91942944.

It is a super-2 number, since 2×449249190² = 403649669431312200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2351995 + ... + 2352185.

It is an arithmetic number, because the mean of its divisors is an integer number (9422784).

Almost surely, 2^449249190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449249190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603058176).

449249190 is an abundant number, since it is smaller than the sum of its proper divisors (756867162).

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

449249190 is a wasteful number, since it uses less digits than its factorization.

449249190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 449249190 is about 21195.4992864051. The cubic root of 449249190 is about 765.8830078991.

The spelling of 449249190 in words is "four hundred forty-nine million, two hundred forty-nine thousand, one hundred ninety".