449967864 has 16 divisors (see below), whose sum is σ = 1124919720. Its totient is φ = 149989280.

The previous prime is 449967863. The next prime is 449967887. The reversal of 449967864 is 468769944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449967863) 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, 9374307 + ... + 9374354.

Almost surely, 2^449967864 is an apocalyptic number.

It is an amenable number.

449967864 is an abundant number, since it is smaller than the sum of its proper divisors (674951856).

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

449967864 is a wasteful number, since it uses less digits than its factorization.

449967864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18748670 (or 18748666 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The square root of 449967864 is about 21212.4459692889. The cubic root of 449967864 is about 766.2911903890.

The spelling of 449967864 in words is "four hundred forty-nine million, nine hundred sixty-seven thousand, eight hundred sixty-four".