449055621 has 24 divisors (see below), whose sum is σ = 742010880. Its totient is φ = 256356576.

The previous prime is 449055619. The next prime is 449055637. The reversal of 449055621 is 126550944.

449055621 is a `hidden beast` number, since 4 + 4 + 90 + 5 + 562 + 1 = 666.

It is not a de Polignac number, because 449055621 - 2¹ = 449055619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449055661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77791 + ... + 83363.

It is an arithmetic number, because the mean of its divisors is an integer number (30917120).

Almost surely, 2^449055621 is an apocalyptic number.

It is an amenable number.

449055621 is a deficient number, since it is larger than the sum of its proper divisors (292955259).

449055621 is a wasteful number, since it uses less digits than its factorization.

449055621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 449055621 is about 21190.9325184146. The cubic root of 449055621 is about 765.7729928571.

The spelling of 449055621 in words is "four hundred forty-nine million, fifty-five thousand, six hundred twenty-one".