123843959 has 2 divisors, whose sum is σ = 123843960. Its totient is φ = 123843958.

The previous prime is 123843911. The next prime is 123844003. The reversal of 123843959 is 959348321.

It is an a-pointer prime, because the next prime (123844003) can be obtained adding 123843959 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123843959 - 2¹⁶ = 123778423 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123843059) 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, 61921979 + 61921980.

It is an arithmetic number, because the mean of its divisors is an integer number (61921980).

Almost surely, 2^123843959 is an apocalyptic number.

123843959 is a deficient number, since it is larger than the sum of its proper divisors (1).

123843959 is an equidigital number, since it uses as much as digits as its factorization.

123843959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 123843959 is about 11128.5200723187. The cubic root of 123843959 is about 498.4538356802.

The spelling of 123843959 in words is "one hundred twenty-three million, eight hundred forty-three thousand, nine hundred fifty-nine".