23948309 has 24 divisors (see below), whose sum is σ = 30692448. Its totient is φ = 18476640.

The previous prime is 23948299. The next prime is 23948317. The reversal of 23948309 is 90384932.

It is not a de Polignac number, because 23948309 - 2⁴ = 23948293 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 (23948329) 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 23 ways as a sum of consecutive naturals, for example, 84482 + ... + 84764.

It is an arithmetic number, because the mean of its divisors is an integer number (1278852).

Almost surely, 2^23948309 is an apocalyptic number.

It is an amenable number.

23948309 is a deficient number, since it is larger than the sum of its proper divisors (6744139).

23948309 is a wasteful number, since it uses less digits than its factorization.

23948309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 23948309 is about 4893.7009512229. The cubic root of 23948309 is about 288.2426782022.

The spelling of 23948309 in words is "twenty-three million, nine hundred forty-eight thousand, three hundred nine".