196694009 has 2 divisors, whose sum is σ = 196694010. Its totient is φ = 196694008.

The previous prime is 196693993. The next prime is 196694033. The reversal of 196694009 is 900496691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135024400 + 61669609 = 11620^2 + 7853^2 .

It is a cyclic number.

It is not a de Polignac number, because 196694009 - 2⁴ = 196693993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196694609) 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, 98347004 + 98347005.

It is an arithmetic number, because the mean of its divisors is an integer number (98347005).

Almost surely, 2^196694009 is an apocalyptic number.

It is an amenable number.

196694009 is a deficient number, since it is larger than the sum of its proper divisors (1).

196694009 is an equidigital number, since it uses as much as digits as its factorization.

196694009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 196694009 is about 14024.7641334890. The cubic root of 196694009 is about 581.5633694048.

The spelling of 196694009 in words is "one hundred ninety-six million, six hundred ninety-four thousand, nine".