23299309 has 4 divisors (see below), whose sum is σ = 25417440. Its totient is φ = 21181180.

The previous prime is 23299291. The next prime is 23299313. The reversal of 23299309 is 90399232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23299309 - 2⁷ = 23299181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23299349) 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, 1059049 + ... + 1059070.

It is an arithmetic number, because the mean of its divisors is an integer number (6354360).

Almost surely, 2^23299309 is an apocalyptic number.

It is an amenable number.

23299309 is a deficient number, since it is larger than the sum of its proper divisors (2118131).

23299309 is a wasteful number, since it uses less digits than its factorization.

23299309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118130.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 23299309 is about 4826.9357774887. The cubic root of 23299309 is about 285.6150010625.

The spelling of 23299309 in words is "twenty-three million, two hundred ninety-nine thousand, three hundred nine".