23209259 has 4 divisors (see below), whose sum is σ = 23261400. Its totient is φ = 23157120.

The previous prime is 23209237. The next prime is 23209273. The reversal of 23209259 is 95290232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23209259 - 2⁸ = 23209003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23209289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25397 + ... + 26294.

It is an arithmetic number, because the mean of its divisors is an integer number (5815350).

Almost surely, 2^23209259 is an apocalyptic number.

23209259 is a deficient number, since it is larger than the sum of its proper divisors (52141).

23209259 is an equidigital number, since it uses as much as digits as its factorization.

23209259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52140.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 23209259 is about 4817.5988832612. The cubic root of 23209259 is about 285.2465661451.

The spelling of 23209259 in words is "twenty-three million, two hundred nine thousand, two hundred fifty-nine".