449665894 has 16 divisors (see below), whose sum is σ = 711547200. Its totient is φ = 212535144.

The previous prime is 449665891. The next prime is 449665903. The reversal of 449665894 is 498566944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449665891) 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 7 ways as a sum of consecutive naturals, for example, 5077 + ... + 30415.

It is an arithmetic number, because the mean of its divisors is an integer number (44471700).

Almost surely, 2^449665894 is an apocalyptic number.

449665894 is a deficient number, since it is larger than the sum of its proper divisors (261881306).

449665894 is a wasteful number, since it uses less digits than its factorization.

449665894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25827.

The product of its digits is 7464960, while the sum is 55.

The square root of 449665894 is about 21205.3270194072. The cubic root of 449665894 is about 766.1197346389.

The spelling of 449665894 in words is "four hundred forty-nine million, six hundred sixty-five thousand, eight hundred ninety-four".