196309 has 4 divisors (see below), whose sum is σ = 198220. Its totient is φ = 194400.

The previous prime is 196307. The next prime is 196331. The reversal of 196309 is 903691.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77284 + 119025 = 278^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 196309 - 2¹ = 196307 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 (196303) 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 3 ways as a sum of consecutive naturals, for example, 792 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (49555).

2¹⁹⁶³⁰⁹ is an apocalyptic number.

It is an amenable number.

196309 is a deficient number, since it is larger than the sum of its proper divisors (1911).

196309 is a wasteful number, since it uses less digits than its factorization.

196309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 196309 is about 443.0677149150. The cubic root of 196309 is about 58.1183670698.

It can be divided in two parts, 196 and 309, that added together give a palindrome (505).

The spelling of 196309 in words is "one hundred ninety-six thousand, three hundred nine".