449681173 has 2 divisors, whose sum is σ = 449681174. Its totient is φ = 449681172.

The previous prime is 449681147. The next prime is 449681179. The reversal of 449681173 is 371186944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329712964 + 119968209 = 18158^2 + 10953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449681173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449681179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224840586 + 224840587.

It is an arithmetic number, because the mean of its divisors is an integer number (224840587).

Almost surely, 2^449681173 is an apocalyptic number.

It is an amenable number.

449681173 is a deficient number, since it is larger than the sum of its proper divisors (1).

449681173 is an equidigital number, since it uses as much as digits as its factorization.

449681173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 449681173 is about 21205.6872795955. The cubic root of 449681173 is about 766.1284117560.

The spelling of 449681173 in words is "four hundred forty-nine million, six hundred eighty-one thousand, one hundred seventy-three".