23988709 has 2 divisors, whose sum is σ = 23988710. Its totient is φ = 23988708.

The previous prime is 23988707. The next prime is 23988733. The reversal of 23988709 is 90788932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23980609 + 8100 = 4897^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 23988709 - 2¹ = 23988707 is a prime.

Together with 23988707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23988707) 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 as a sum of consecutive naturals, namely, 11994354 + 11994355.

It is an arithmetic number, because the mean of its divisors is an integer number (11994355).

Almost surely, 2^23988709 is an apocalyptic number.

It is an amenable number.

23988709 is a deficient number, since it is larger than the sum of its proper divisors (1).

23988709 is an equidigital number, since it uses as much as digits as its factorization.

23988709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 23988709 is about 4897.8269671355. The cubic root of 23988709 is about 288.4046724107.

The spelling of 23988709 in words is "twenty-three million, nine hundred eighty-eight thousand, seven hundred nine".