166479493 has 8 divisors (see below), whose sum is σ = 169389848. Its totient is φ = 163586304.

The previous prime is 166479473. The next prime is 166479529. The reversal of 166479493 is 394974661.

It can be written as a sum of positive squares in 4 ways, for example, as 1151329 + 165328164 = 1073^2 + 12858^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166479493 - 2⁹ = 166478981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166479403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16105 + ... + 24337.

It is an arithmetic number, because the mean of its divisors is an integer number (21173731).

Almost surely, 2^166479493 is an apocalyptic number.

It is an amenable number.

166479493 is a deficient number, since it is larger than the sum of its proper divisors (2910355).

166479493 is an equidigital number, since it uses as much as digits as its factorization.

166479493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8583.

The product of its digits is 979776, while the sum is 49.

The square root of 166479493 is about 12902.6932459855. The cubic root of 166479493 is about 550.1151197044.

The spelling of 166479493 in words is "one hundred sixty-six million, four hundred seventy-nine thousand, four hundred ninety-three".