168949499 has 2 divisors, whose sum is σ = 168949500. Its totient is φ = 168949498.

The previous prime is 168949493. The next prime is 168949523. The reversal of 168949499 is 994949861.

It is a weak prime.

It is an emirp because it is prime and its reverse (994949861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168949499 is a prime.

It is not a weakly prime, because it can be changed into another prime (168949493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84474749 + 84474750.

It is an arithmetic number, because the mean of its divisors is an integer number (84474750).

Almost surely, 2^168949499 is an apocalyptic number.

168949499 is a deficient number, since it is larger than the sum of its proper divisors (1).

168949499 is an equidigital number, since it uses as much as digits as its factorization.

168949499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 168949499 is about 12998.0575087203. The cubic root of 168949499 is about 552.8224051405.

The spelling of 168949499 in words is "one hundred sixty-eight million, nine hundred forty-nine thousand, four hundred ninety-nine".