173689349 has 2 divisors, whose sum is σ = 173689350. Its totient is φ = 173689348.

The previous prime is 173689343. The next prime is 173689367. The reversal of 173689349 is 943986371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170485249 + 3204100 = 13057^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 173689349 - 2⁸ = 173689093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 173689297 and 173689306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173689343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86844674 + 86844675.

It is an arithmetic number, because the mean of its divisors is an integer number (86844675).

Almost surely, 2^173689349 is an apocalyptic number.

It is an amenable number.

173689349 is a deficient number, since it is larger than the sum of its proper divisors (1).

173689349 is an equidigital number, since it uses as much as digits as its factorization.

173689349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 173689349 is about 13179.1255020961. The cubic root of 173689349 is about 557.9445791834.

The spelling of 173689349 in words is "one hundred seventy-three million, six hundred eighty-nine thousand, three hundred forty-nine".