168299849 has 2 divisors, whose sum is σ = 168299850. Its totient is φ = 168299848.

The previous prime is 168299839. The next prime is 168299863. The reversal of 168299849 is 948992861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126787600 + 41512249 = 11260^2 + 6443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168299849 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 168299794 and 168299803.

It is not a weakly prime, because it can be changed into another prime (168299839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84149924 + 84149925.

It is an arithmetic number, because the mean of its divisors is an integer number (84149925).

Almost surely, 2^168299849 is an apocalyptic number.

It is an amenable number.

168299849 is a deficient number, since it is larger than the sum of its proper divisors (1).

168299849 is an equidigital number, since it uses as much as digits as its factorization.

168299849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 56.

The square root of 168299849 is about 12973.0431665049. The cubic root of 168299849 is about 552.1129182023.

The spelling of 168299849 in words is "one hundred sixty-eight million, two hundred ninety-nine thousand, eight hundred forty-nine".