23696209 has 2 divisors, whose sum is σ = 23696210. Its totient is φ = 23696208.

The previous prime is 23696201. The next prime is 23696221. The reversal of 23696209 is 90269632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19775809 + 3920400 = 4447^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 23696209 - 2³ = 23696201 is a prime.

It is not a weakly prime, because it can be changed into another prime (23696201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11848104 + 11848105.

It is an arithmetic number, because the mean of its divisors is an integer number (11848105).

Almost surely, 2^23696209 is an apocalyptic number.

It is an amenable number.

23696209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23696209 is an equidigital number, since it uses as much as digits as its factorization.

23696209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 23696209 is about 4867.8752038235. The cubic root of 23696209 is about 287.2276801364.

The spelling of 23696209 in words is "twenty-three million, six hundred ninety-six thousand, two hundred nine".