196109 has 4 divisors (see below), whose sum is σ = 199104. Its totient is φ = 193116.

The previous prime is 196087. The next prime is 196111. The reversal of 196109 is 901691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 901691 = 7 ⋅128813.

It is a cyclic number.

It is not a de Polignac number, because 196109 - 2¹² = 192013 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 (196139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (49776).

2¹⁹⁶¹⁰⁹ is an apocalyptic number.

It is an amenable number.

196109 is a deficient number, since it is larger than the sum of its proper divisors (2995).

196109 is an equidigital number, since it uses as much as digits as its factorization.

196109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 196109 is about 442.8419582650. The cubic root of 196109 is about 58.0986233273.

The spelling of 196109 in words is "one hundred ninety-six thousand, one hundred nine".