196214309 has 2 divisors, whose sum is σ = 196214310. Its totient is φ = 196214308.

The previous prime is 196214297. The next prime is 196214329. The reversal of 196214309 is 903412691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195720100 + 494209 = 13990^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 196214309 - 2¹⁶ = 196148773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196214329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98107154 + 98107155.

It is an arithmetic number, because the mean of its divisors is an integer number (98107155).

Almost surely, 2^196214309 is an apocalyptic number.

It is an amenable number.

196214309 is a deficient number, since it is larger than the sum of its proper divisors (1).

196214309 is an equidigital number, since it uses as much as digits as its factorization.

196214309 is an odious number, because the sum of its binary digits is odd.

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

The square root of 196214309 is about 14007.6518017832. The cubic root of 196214309 is about 581.0902096857.

The spelling of 196214309 in words is "one hundred ninety-six million, two hundred fourteen thousand, three hundred nine".