449621 has 2 divisors, whose sum is σ = 449622. Its totient is φ = 449620.
The previous prime is 449609. The next prime is 449629. The reversal of 449621 is 126944.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 442225 + 7396 = 665^2 + 86^2 .
It is a cyclic number.
It is not a de Polignac number, because 449621 - 26 = 449557 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (449629) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224810 + 224811.
It is an arithmetic number, because the mean of its divisors is an integer number (224811).
2449621 is an apocalyptic number.
It is an amenable number.
449621 is a deficient number, since it is larger than the sum of its proper divisors (1).
449621 is an equidigital number, since it uses as much as digits as its factorization.
449621 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1728, while the sum is 26.
The square root of 449621 is about 670.5378438239. The cubic root of 449621 is about 76.6094237691.
It can be divided in two parts, 44 and 9621, that multiplied together give a palindrome (423324).
The spelling of 449621 in words is "four hundred forty-nine thousand, six hundred twenty-one".
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