166327429 has 2 divisors, whose sum is σ = 166327430. Its totient is φ = 166327428.

The previous prime is 166327423. The next prime is 166327471. The reversal of 166327429 is 924723661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120494529 + 45832900 = 10977^2 + 6770^2 .

It is a cyclic number.

It is not a de Polignac number, because 166327429 - 2⁹ = 166326917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166327391 and 166327400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166327423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83163714 + 83163715.

It is an arithmetic number, because the mean of its divisors is an integer number (83163715).

Almost surely, 2^166327429 is an apocalyptic number.

It is an amenable number.

166327429 is a deficient number, since it is larger than the sum of its proper divisors (1).

166327429 is an equidigital number, since it uses as much as digits as its factorization.

166327429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 166327429 is about 12896.7991765399. The cubic root of 166327429 is about 549.9475751684.

It can be divided in two parts, 1663 and 27429, that added together give a palindrome (29092).

The spelling of 166327429 in words is "one hundred sixty-six million, three hundred twenty-seven thousand, four hundred twenty-nine".