449223637 has 2 divisors, whose sum is σ = 449223638. Its totient is φ = 449223636.

The previous prime is 449223617. The next prime is 449223653. The reversal of 449223637 is 736322944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279859441 + 169364196 = 16729^2 + 13014^2 .

It is a cyclic number.

It is not a de Polignac number, because 449223637 - 2¹⁵ = 449190869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449223637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449223617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224611818 + 224611819.

It is an arithmetic number, because the mean of its divisors is an integer number (224611819).

Almost surely, 2^449223637 is an apocalyptic number.

It is an amenable number.

449223637 is a deficient number, since it is larger than the sum of its proper divisors (1).

449223637 is an equidigital number, since it uses as much as digits as its factorization.

449223637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 40.

The square root of 449223637 is about 21194.8964847673. The cubic root of 449223637 is about 765.8684866490.

The spelling of 449223637 in words is "four hundred forty-nine million, two hundred twenty-three thousand, six hundred thirty-seven".