449627627621 has 4 divisors (see below), whose sum is σ = 450316185132. Its totient is φ = 448939070112.

The previous prime is 449627627597. The next prime is 449627627629. The reversal of 449627627621 is 126726726944.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64996953025 + 384630674596 = 254945^2 + 620186^2 .

It is a cyclic number.

It is not a de Polignac number, because 449627627621 - 2⁶ = 449627627557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449627627629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344277776 + ... + 344279081.

It is an arithmetic number, because the mean of its divisors is an integer number (112579046283).

Almost surely, 2^449627627621 is an apocalyptic number.

It is an amenable number.

449627627621 is a deficient number, since it is larger than the sum of its proper divisors (688557511).

449627627621 is an equidigital number, since it uses as much as digits as its factorization.

449627627621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688557510.

The product of its digits is 12192768, while the sum is 56.

The spelling of 449627627621 in words is "four hundred forty-nine billion, six hundred twenty-seven million, six hundred twenty-seven thousand, six hundred twenty-one".