196889729 has 8 divisors (see below), whose sum is σ = 212535360. Its totient is φ = 181834576.

The previous prime is 196889713. The next prime is 196889783. The reversal of 196889729 is 927988691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196889729 - 2⁴ = 196889713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196889129) 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 7 ways as a sum of consecutive naturals, for example, 146927 + ... + 148260.

It is an arithmetic number, because the mean of its divisors is an integer number (26566920).

Almost surely, 2^196889729 is an apocalyptic number.

It is an amenable number.

196889729 is a deficient number, since it is larger than the sum of its proper divisors (15645631).

196889729 is a wasteful number, since it uses less digits than its factorization.

196889729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295239.

The product of its digits is 3919104, while the sum is 59.

The square root of 196889729 is about 14031.7400560301. The cubic root of 196889729 is about 581.7561999690.

The spelling of 196889729 in words is "one hundred ninety-six million, eight hundred eighty-nine thousand, seven hundred twenty-nine".