23987109 has 8 divisors (see below), whose sum is σ = 32037120. Its totient is φ = 15964256.

The previous prime is 23987081. The next prime is 23987129. The reversal of 23987109 is 90178932.

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

It is a cyclic number.

It is not a de Polignac number, because 23987109 - 2¹¹ = 23985061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23987129) 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, 4629 + ... + 8330.

It is an arithmetic number, because the mean of its divisors is an integer number (4004640).

Almost surely, 2^23987109 is an apocalyptic number.

It is an amenable number.

23987109 is a deficient number, since it is larger than the sum of its proper divisors (8050011).

23987109 is a wasteful number, since it uses less digits than its factorization.

23987109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13579.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 23987109 is about 4897.6636266694. The cubic root of 23987109 is about 288.3982602588.

The spelling of 23987109 in words is "twenty-three million, nine hundred eighty-seven thousand, one hundred nine".