196984309 has 4 divisors (see below), whose sum is σ = 198084960. Its totient is φ = 195883660.

The previous prime is 196984297. The next prime is 196984313. The reversal of 196984309 is 903489691.

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.

It is a cyclic number.

It is not a de Polignac number, because 196984309 - 2⁹ = 196983797 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 (196984339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550057 + ... + 550414.

It is an arithmetic number, because the mean of its divisors is an integer number (49521240).

Almost surely, 2^196984309 is an apocalyptic number.

It is an amenable number.

196984309 is a deficient number, since it is larger than the sum of its proper divisors (1100651).

196984309 is a wasteful number, since it uses less digits than its factorization.

196984309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100650.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 196984309 is about 14035.1098677566. The cubic root of 196984309 is about 581.8493378787.

The spelling of 196984309 in words is "one hundred ninety-six million, nine hundred eighty-four thousand, three hundred nine".