23849143 has 2 divisors, whose sum is σ = 23849144. Its totient is φ = 23849142.

The previous prime is 23849131. The next prime is 23849149. The reversal of 23849143 is 34194832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23849143 - 2²¹ = 21751991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23849099 and 23849108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23849149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11924571 + 11924572.

It is an arithmetic number, because the mean of its divisors is an integer number (11924572).

Almost surely, 2^23849143 is an apocalyptic number.

23849143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23849143 is an equidigital number, since it uses as much as digits as its factorization.

23849143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 23849143 is about 4883.5584362225. The cubic root of 23849143 is about 287.8442726454.

The spelling of 23849143 in words is "twenty-three million, eight hundred forty-nine thousand, one hundred forty-three".