449586540 has 144 divisors (see below), whose sum is σ = 1476820800. Its totient is φ = 110052864.

The previous prime is 449586499. The next prime is 449586541. The reversal of 449586540 is 45685944.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (449586541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 535441 + ... + 536279.

It is an arithmetic number, because the mean of its divisors is an integer number (10255700).

Almost surely, 2^449586540 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 449586540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738410400).

449586540 is an abundant number, since it is smaller than the sum of its proper divisors (1027234260).

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

449586540 is a wasteful number, since it uses less digits than its factorization.

449586540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 449586540 is about 21203.4558504033. The cubic root of 449586540 is about 766.0746654421.

The spelling of 449586540 in words is "four hundred forty-nine million, five hundred eighty-six thousand, five hundred forty".