209796069 has 8 divisors (see below), whose sum is σ = 319689280. Its totient is φ = 119883456.

The previous prime is 209796049. The next prime is 209796079. The reversal of 209796069 is 960697902.

It is a happy number.

209796069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 209796069 - 2²⁰ = 208747493 is a prime.

It is a super-2 number, since 2×209796069² = 88028781135705522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209796049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4995124 + ... + 4995165.

It is an arithmetic number, because the mean of its divisors is an integer number (39961160).

Almost surely, 2^209796069 is an apocalyptic number.

It is an amenable number.

209796069 is a deficient number, since it is larger than the sum of its proper divisors (109893211).

209796069 is an equidigital number, since it uses as much as digits as its factorization.

209796069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990299.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 209796069 is about 14484.3387491456. The cubic root of 209796069 is about 594.1997282077.

The spelling of 209796069 in words is "two hundred nine million, seven hundred ninety-six thousand, sixty-nine".