196386979 has 4 divisors (see below), whose sum is σ = 197026984. Its totient is φ = 195746976.

The previous prime is 196386973. The next prime is 196386997. The reversal of 196386979 is 979683691.

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

It is a cyclic number.

It is not a de Polignac number, because 196386979 - 2⁹ = 196386467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196386973) 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, 319542 + ... + 320155.

It is an arithmetic number, because the mean of its divisors is an integer number (49256746).

Almost surely, 2^196386979 is an apocalyptic number.

196386979 is a deficient number, since it is larger than the sum of its proper divisors (640005).

196386979 is an equidigital number, since it uses as much as digits as its factorization.

196386979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640004.

The product of its digits is 4408992, while the sum is 58.

The square root of 196386979 is about 14013.8138634706. The cubic root of 196386979 is about 581.2606142279.

The spelling of 196386979 in words is "one hundred ninety-six million, three hundred eighty-six thousand, nine hundred seventy-nine".