23964389 has 2 divisors, whose sum is σ = 23964390. Its totient is φ = 23964388.

The previous prime is 23964379. The next prime is 23964397. The reversal of 23964389 is 98346932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 3364 = 4895^2 + 58^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23964389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23964379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11982194 + 11982195.

It is an arithmetic number, because the mean of its divisors is an integer number (11982195).

Almost surely, 2^23964389 is an apocalyptic number.

It is an amenable number.

23964389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23964389 is an equidigital number, since it uses as much as digits as its factorization.

23964389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 23964389 is about 4895.3436038750. The cubic root of 23964389 is about 288.3071769145.

The spelling of 23964389 in words is "twenty-three million, nine hundred sixty-four thousand, three hundred eighty-nine".