449084021 has 2 divisors, whose sum is σ = 449084022. Its totient is φ = 449084020.

The previous prime is 449084003. The next prime is 449084023. The reversal of 449084021 is 120480944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281769796 + 167314225 = 16786^2 + 12935^2 .

It is a cyclic number.

It is not a de Polignac number, because 449084021 - 2¹⁴ = 449067637 is a prime.

It is a Sophie Germain prime.

Together with 449084023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449084023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224542010 + 224542011.

It is an arithmetic number, because the mean of its divisors is an integer number (224542011).

Almost surely, 2^449084021 is an apocalyptic number.

It is an amenable number.

449084021 is a deficient number, since it is larger than the sum of its proper divisors (1).

449084021 is an equidigital number, since it uses as much as digits as its factorization.

449084021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 449084021 is about 21191.6026057493. The cubic root of 449084021 is about 765.7891359906.

The spelling of 449084021 in words is "four hundred forty-nine million, eighty-four thousand, twenty-one".