449009173 has 2 divisors, whose sum is σ = 449009174. Its totient is φ = 449009172.

The previous prime is 449009161. The next prime is 449009179. The reversal of 449009173 is 371900944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320481604 + 128527569 = 17902^2 + 11337^2 .

It is a cyclic number.

It is not a de Polignac number, because 449009173 - 2⁹ = 449008661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449009179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224504586 + 224504587.

It is an arithmetic number, because the mean of its divisors is an integer number (224504587).

Almost surely, 2^449009173 is an apocalyptic number.

It is an amenable number.

449009173 is a deficient number, since it is larger than the sum of its proper divisors (1).

449009173 is an equidigital number, since it uses as much as digits as its factorization.

449009173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 449009173 is about 21189.8365496292. The cubic root of 449009173 is about 765.7465894090.

The spelling of 449009173 in words is "four hundred forty-nine million, nine thousand, one hundred seventy-three".