449306718 has 32 divisors (see below), whose sum is σ = 1081040640. Its totient is φ = 121616640.

The previous prime is 449306717. The next prime is 449306731. The reversal of 449306718 is 817603944.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 449306718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449306713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280723 + ... + 282318.

It is an arithmetic number, because the mean of its divisors is an integer number (33782520).

Almost surely, 2^449306718 is an apocalyptic number.

449306718 is an abundant number, since it is smaller than the sum of its proper divisors (631733922).

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

449306718 is a wasteful number, since it uses less digits than its factorization.

449306718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563072.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 449306718 is about 21196.8563235212. The cubic root of 449306718 is about 765.9156978762.

The spelling of 449306718 in words is "four hundred forty-nine million, three hundred six thousand, seven hundred eighteen".