166949 has 2 divisors, whose sum is σ = 166950. Its totient is φ = 166948.

The previous prime is 166931. The next prime is 166967. The reversal of 166949 is 949661.

It is a balanced prime because it is at equal distance from previous prime (166931) and next prime (166967).

It can be written as a sum of positive squares in only one way, i.e., 145924 + 21025 = 382^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 166949 - 2⁸ = 166693 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83474 + 83475.

It is an arithmetic number, because the mean of its divisors is an integer number (83475).

2¹⁶⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

166949 is a deficient number, since it is larger than the sum of its proper divisors (1).

166949 is an equidigital number, since it uses as much as digits as its factorization.

166949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 166949 is about 408.5939304493. The cubic root of 166949 is about 55.0631780887.

The spelling of 166949 in words is "one hundred sixty-six thousand, nine hundred forty-nine".