196388889 has 8 divisors (see below), whose sum is σ = 267423360. Its totient is φ = 128140176.

The previous prime is 196388867. The next prime is 196388953. The reversal of 196388889 is 988883691.

It is a happy number.

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

It is not a de Polignac number, because 196388889 - 2¹³ = 196380697 is a prime.

It is a super-3 number, since 3×196388889³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196388839) 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, 696274 + ... + 696555.

It is an arithmetic number, because the mean of its divisors is an integer number (33427920).

Almost surely, 2^196388889 is an apocalyptic number.

It is an amenable number.

196388889 is a deficient number, since it is larger than the sum of its proper divisors (71034471).

196388889 is a wasteful number, since it uses less digits than its factorization.

196388889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392879.

The product of its digits is 5971968, while the sum is 60.

The square root of 196388889 is about 14013.8820103496. The cubic root of 196388889 is about 581.2624986097.

The spelling of 196388889 in words is "one hundred ninety-six million, three hundred eighty-eight thousand, eight hundred eighty-nine".