449875644 has 12 divisors (see below), whose sum is σ = 1049709864. Its totient is φ = 149958544.

The previous prime is 449875639. The next prime is 449875697. The reversal of 449875644 is 446578944.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18744807 + ... + 18744830.

It is an arithmetic number, because the mean of its divisors is an integer number (87475822).

Almost surely, 2^449875644 is an apocalyptic number.

It is an amenable number.

449875644 is an abundant number, since it is smaller than the sum of its proper divisors (599834220).

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

449875644 is a wasteful number, since it uses less digits than its factorization.

449875644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37489644 (or 37489642 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The square root of 449875644 is about 21210.2721340392. The cubic root of 449875644 is about 766.2388368711.

The spelling of 449875644 in words is "four hundred forty-nine million, eight hundred seventy-five thousand, six hundred forty-four".