23509329 has 8 divisors (see below), whose sum is σ = 31487232. Its totient is φ = 15602160.

The previous prime is 23509313. The next prime is 23509331. The reversal of 23509329 is 92390532.

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

It is not a de Polignac number, because 23509329 - 2⁴ = 23509313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23509329.

It is not an unprimeable number, because it can be changed into a prime (23509399) 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 7 ways as a sum of consecutive naturals, for example, 16902 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (3935904).

Almost surely, 2^23509329 is an apocalyptic number.

It is an amenable number.

23509329 is a deficient number, since it is larger than the sum of its proper divisors (7977903).

23509329 is a wasteful number, since it uses less digits than its factorization.

23509329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35367.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 23509329 is about 4848.6419748214. The cubic root of 23509329 is about 286.4706133493.

The spelling of 23509329 in words is "twenty-three million, five hundred nine thousand, three hundred twenty-nine".