449900771544 has 384 divisors, whose sum is σ = 1508367744000. Its totient is φ = 118257656832.

The previous prime is 449900771533. The next prime is 449900771569. The reversal of 449900771544 is 445177009944.

449900771544 is a `hidden beast` number, since 4 + 4 + 9 + 90 + 0 + 7 + 7 + 1 + 544 = 666.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 263252962 + ... + 263254670.

It is an arithmetic number, because the mean of its divisors is an integer number (3928041000).

Almost surely, 2^449900771544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449900771544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754183872000).

449900771544 is an abundant number, since it is smaller than the sum of its proper divisors (1058466972456).

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

449900771544 is a wasteful number, since it uses less digits than its factorization.

449900771544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 449900771544 in words is "four hundred forty-nine billion, nine hundred million, seven hundred seventy-one thousand, five hundred forty-four".