196239647 has 2 divisors, whose sum is σ = 196239648. Its totient is φ = 196239646.

The previous prime is 196239599. The next prime is 196239649. The reversal of 196239647 is 746932691.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (746932691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196239647 - 2¹⁴ = 196223263 is a prime.

Together with 196239649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196239649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98119823 + 98119824.

It is an arithmetic number, because the mean of its divisors is an integer number (98119824).

Almost surely, 2^196239647 is an apocalyptic number.

196239647 is a deficient number, since it is larger than the sum of its proper divisors (1).

196239647 is an equidigital number, since it uses as much as digits as its factorization.

196239647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 196239647 is about 14008.5562068330. The cubic root of 196239647 is about 581.1152215041.

The spelling of 196239647 in words is "one hundred ninety-six million, two hundred thirty-nine thousand, six hundred forty-seven".