196966139 has 2 divisors, whose sum is σ = 196966140. Its totient is φ = 196966138.

The previous prime is 196966129. The next prime is 196966153. The reversal of 196966139 is 931669691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196966139 - 2²⁰ = 195917563 is a prime.

It is not a weakly prime, because it can be changed into another prime (196966109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98483069 + 98483070.

It is an arithmetic number, because the mean of its divisors is an integer number (98483070).

Almost surely, 2^196966139 is an apocalyptic number.

196966139 is a deficient number, since it is larger than the sum of its proper divisors (1).

196966139 is an equidigital number, since it uses as much as digits as its factorization.

196966139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 50.

The square root of 196966139 is about 14034.4625476005. The cubic root of 196966139 is about 581.8314472362.

The spelling of 196966139 in words is "one hundred ninety-six million, nine hundred sixty-six thousand, one hundred thirty-nine".