449821756 has 12 divisors (see below), whose sum is σ = 787431568. Its totient is φ = 224841312.

The previous prime is 449821739. The next prime is 449821793. The reversal of 449821756 is 657128944.

It is a super-2 number, since 2×449821756² = 404679224341847072, which contains 22 as substring.

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, 1161 + ... + 30016.

Almost surely, 2^449821756 is an apocalyptic number.

It is an amenable number.

449821756 is a deficient number, since it is larger than the sum of its proper divisors (337609812).

449821756 is a wasteful number, since it uses less digits than its factorization.

449821756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34788 (or 34786 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 449821756 is about 21209.0017681172. The cubic root of 449821756 is about 766.2082412108.

The spelling of 449821756 in words is "four hundred forty-nine million, eight hundred twenty-one thousand, seven hundred fifty-six".