196788959 has 4 divisors (see below), whose sum is σ = 197967504. Its totient is φ = 195610416.

The previous prime is 196788937. The next prime is 196788967. The reversal of 196788959 is 959887691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196788959 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 (196788979) 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, 589022 + ... + 589355.

It is an arithmetic number, because the mean of its divisors is an integer number (49491876).

Almost surely, 2^196788959 is an apocalyptic number.

196788959 is a deficient number, since it is larger than the sum of its proper divisors (1178545).

196788959 is a wasteful number, since it uses less digits than its factorization.

196788959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178544.

The product of its digits is 9797760, while the sum is 62.

The square root of 196788959 is about 14028.1488087345. The cubic root of 196788959 is about 581.6569336153.

The spelling of 196788959 in words is "one hundred ninety-six million, seven hundred eighty-eight thousand, nine hundred fifty-nine".