449081724 has 144 divisors (see below), whose sum is σ = 1370958848. Its totient is φ = 111393792.

The previous prime is 449081687. The next prime is 449081729. The reversal of 449081724 is 427180944.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449081729) 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, 314877 + ... + 316299.

Almost surely, 2^449081724 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 449081724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685479424).

449081724 is an abundant number, since it is smaller than the sum of its proper divisors (921877124).

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

449081724 is a wasteful number, since it uses less digits than its factorization.

449081724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 449081724 is about 21191.5484096845. The cubic root of 449081724 is about 765.7878303547.

The spelling of 449081724 in words is "four hundred forty-nine million, eighty-one thousand, seven hundred twenty-four".