166429799 has 2 divisors, whose sum is σ = 166429800. Its totient is φ = 166429798.

The previous prime is 166429789. The next prime is 166429831. The reversal of 166429799 is 997924661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166429799 - 2¹² = 166425703 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166429799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166429709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83214899 + 83214900.

It is an arithmetic number, because the mean of its divisors is an integer number (83214900).

Almost surely, 2^166429799 is an apocalyptic number.

166429799 is a deficient number, since it is larger than the sum of its proper divisors (1).

166429799 is an equidigital number, since it uses as much as digits as its factorization.

166429799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 166429799 is about 12900.7673802763. The cubic root of 166429799 is about 550.0603779446.

The spelling of 166429799 in words is "one hundred sixty-six million, four hundred twenty-nine thousand, seven hundred ninety-nine".