449247287 has 4 divisors (see below), whose sum is σ = 475673616. Its totient is φ = 422820960.

The previous prime is 449247283. The next prime is 449247307. The reversal of 449247287 is 782742944.

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

It is a cyclic number.

It is not a de Polignac number, because 449247287 - 2² = 449247283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449247283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13213139 + ... + 13213172.

It is an arithmetic number, because the mean of its divisors is an integer number (118918404).

Almost surely, 2^449247287 is an apocalyptic number.

449247287 is a deficient number, since it is larger than the sum of its proper divisors (26426329).

449247287 is a wasteful number, since it uses less digits than its factorization.

449247287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26426328.

The product of its digits is 903168, while the sum is 47.

The square root of 449247287 is about 21195.4543947517. The cubic root of 449247287 is about 765.8819264819.

The spelling of 449247287 in words is "four hundred forty-nine million, two hundred forty-seven thousand, two hundred eighty-seven".