449081489 has 4 divisors (see below), whose sum is σ = 449142324. Its totient is φ = 449020656.

The previous prime is 449081467. The next prime is 449081491. The reversal of 449081489 is 984180944.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248377600 + 200703889 = 15760^2 + 14167^2 .

It is a cyclic number.

It is not a de Polignac number, because 449081489 - 2²⁰ = 448032913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449081449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17522 + ... + 34715.

It is an arithmetic number, because the mean of its divisors is an integer number (112285581).

Almost surely, 2^449081489 is an apocalyptic number.

It is an amenable number.

449081489 is a deficient number, since it is larger than the sum of its proper divisors (60835).

449081489 is an equidigital number, since it uses as much as digits as its factorization.

449081489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60834.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 449081489 is about 21191.5428650205. The cubic root of 449081489 is about 765.7876967783.

The spelling of 449081489 in words is "four hundred forty-nine million, eighty-one thousand, four hundred eighty-nine".