168449 has 2 divisors, whose sum is σ = 168450. Its totient is φ = 168448.

The previous prime is 168433. The next prime is 168451. The reversal of 168449 is 944861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102400 + 66049 = 320^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 168449 - 2⁴ = 168433 is a prime.

It is a Sophie Germain prime.

Together with 168451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (168409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84224 + 84225.

It is an arithmetic number, because the mean of its divisors is an integer number (84225).

It is a Proth number, since it is equal to 329 ⋅ 2⁹ + 1 and 329 < 2⁹.

2¹⁶⁸⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

168449 is a deficient number, since it is larger than the sum of its proper divisors (1).

168449 is an equidigital number, since it uses as much as digits as its factorization.

168449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 168449 is about 410.4253890782. The cubic root of 168449 is about 55.2275968219.

The spelling of 168449 in words is "one hundred sixty-eight thousand, four hundred forty-nine".