23982809 has 8 divisors (see below), whose sum is σ = 24941568. Its totient is φ = 23035680.

The previous prime is 23982787. The next prime is 23982811. The reversal of 23982809 is 90828932.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23982809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23982209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1424 + ... + 7070.

It is an arithmetic number, because the mean of its divisors is an integer number (3117696).

Almost surely, 2^23982809 is an apocalyptic number.

It is an amenable number.

23982809 is a deficient number, since it is larger than the sum of its proper divisors (958759).

23982809 is a wasteful number, since it uses less digits than its factorization.

23982809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5815.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 23982809 is about 4897.2246221712. The cubic root of 23982809 is about 288.3810261877.

The spelling of 23982809 in words is "twenty-three million, nine hundred eighty-two thousand, eight hundred nine".