23387447 has 2 divisors, whose sum is σ = 23387448. Its totient is φ = 23387446.

The previous prime is 23387443. The next prime is 23387449. The reversal of 23387447 is 74478332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23387447 - 2² = 23387443 is a prime.

Together with 23387449, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23387447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23387443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11693723 + 11693724.

It is an arithmetic number, because the mean of its divisors is an integer number (11693724).

Almost surely, 2^23387447 is an apocalyptic number.

23387447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23387447 is an equidigital number, since it uses as much as digits as its factorization.

23387447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 38.

The square root of 23387447 is about 4836.0569682335. The cubic root of 23387447 is about 285.9746949753.

The spelling of 23387447 in words is "twenty-three million, three hundred eighty-seven thousand, four hundred forty-seven".