449450173 has 2 divisors, whose sum is σ = 449450174. Its totient is φ = 449450172.

The previous prime is 449450171. The next prime is 449450203. The reversal of 449450173 is 371054944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270372249 + 179077924 = 16443^2 + 13382^2 .

It is a cyclic number.

It is not a de Polignac number, because 449450173 - 2¹ = 449450171 is a prime.

Together with 449450171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449450171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224725086 + 224725087.

It is an arithmetic number, because the mean of its divisors is an integer number (224725087).

Almost surely, 2^449450173 is an apocalyptic number.

It is an amenable number.

449450173 is a deficient number, since it is larger than the sum of its proper divisors (1).

449450173 is an equidigital number, since it uses as much as digits as its factorization.

449450173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 449450173 is about 21200.2399278876. The cubic root of 449450173 is about 765.9972032566.

The spelling of 449450173 in words is "four hundred forty-nine million, four hundred fifty thousand, one hundred seventy-three".