196999589 has 2 divisors, whose sum is σ = 196999590. Its totient is φ = 196999588.

The previous prime is 196999573. The next prime is 196999613. The reversal of 196999589 is 985999691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107848225 + 89151364 = 10385^2 + 9442^2 .

It is a cyclic number.

It is not a de Polignac number, because 196999589 - 2⁴ = 196999573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196999549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98499794 + 98499795.

It is an arithmetic number, because the mean of its divisors is an integer number (98499795).

Almost surely, 2^196999589 is an apocalyptic number.

It is an amenable number.

196999589 is a deficient number, since it is larger than the sum of its proper divisors (1).

196999589 is an equidigital number, since it uses as much as digits as its factorization.

196999589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14171760, while the sum is 65.

The square root of 196999589 is about 14035.6542063418. The cubic root of 196999589 is about 581.8643821023.

The spelling of 196999589 in words is "one hundred ninety-six million, nine hundred ninety-nine thousand, five hundred eighty-nine".