209498196 has 12 divisors (see below), whose sum is σ = 488829152. Its totient is φ = 69832728.

The previous prime is 209498143. The next prime is 209498197. The reversal of 209498196 is 691894902.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209498197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8729080 + ... + 8729103.

Almost surely, 2^209498196 is an apocalyptic number.

It is an amenable number.

209498196 is an abundant number, since it is smaller than the sum of its proper divisors (279330956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209498196 is a wasteful number, since it uses less digits than its factorization.

209498196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17458190 (or 17458188 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 209498196 is about 14474.0525078500. The cubic root of 209498196 is about 593.9183757968.

The spelling of 209498196 in words is "two hundred nine million, four hundred ninety-eight thousand, one hundred ninety-six".