449987664 has 80 divisors (see below), whose sum is σ = 1374376320. Its totient is φ = 124131840.

The previous prime is 449987653. The next prime is 449987677. The reversal of 449987664 is 466789944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13347 + ... + 32834.

It is an arithmetic number, because the mean of its divisors is an integer number (17179704).

Almost surely, 2^449987664 is an apocalyptic number.

It is an amenable number.

449987664 is an abundant number, since it is smaller than the sum of its proper divisors (924388656).

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

449987664 is a wasteful number, since it uses less digits than its factorization.

449987664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46228 (or 46222 counting only the distinct ones).

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

The square root of 449987664 is about 21212.9126712953. The cubic root of 449987664 is about 766.3024299643.

The spelling of 449987664 in words is "four hundred forty-nine million, nine hundred eighty-seven thousand, six hundred sixty-four".