449287889 has 4 divisors (see below), whose sum is σ = 472934640. Its totient is φ = 425641140.

The previous prime is 449287873. The next prime is 449287901. The reversal of 449287889 is 988782944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449287889 - 2⁴ = 449287873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449287829) 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, 11823347 + ... + 11823384.

It is an arithmetic number, because the mean of its divisors is an integer number (118233660).

Almost surely, 2^449287889 is an apocalyptic number.

It is an amenable number.

449287889 is a deficient number, since it is larger than the sum of its proper divisors (23646751).

449287889 is a wasteful number, since it uses less digits than its factorization.

449287889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23646750.

The product of its digits is 9289728, while the sum is 59.

The square root of 449287889 is about 21196.4121728183. The cubic root of 449287889 is about 765.9049987052.

The spelling of 449287889 in words is "four hundred forty-nine million, two hundred eighty-seven thousand, eight hundred eighty-nine".