23918429 has 2 divisors, whose sum is σ = 23918430. Its totient is φ = 23918428.

The previous prime is 23918393. The next prime is 23918431. The reversal of 23918429 is 92481932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18619225 + 5299204 = 4315^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 23918429 - 2⁸ = 23918173 is a prime.

Together with 23918431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23918392 and 23918401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23918029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11959214 + 11959215.

It is an arithmetic number, because the mean of its divisors is an integer number (11959215).

Almost surely, 2^23918429 is an apocalyptic number.

It is an amenable number.

23918429 is a deficient number, since it is larger than the sum of its proper divisors (1).

23918429 is an equidigital number, since it uses as much as digits as its factorization.

23918429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 23918429 is about 4890.6470941993. The cubic root of 23918429 is about 288.1227494048.

The spelling of 23918429 in words is "twenty-three million, nine hundred eighteen thousand, four hundred twenty-nine".