123859939 has 8 divisors (see below), whose sum is σ = 143953920. Its totient is φ = 104365896.

The previous prime is 123859927. The next prime is 123859949. The reversal of 123859939 is 939958321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123859939 - 2⁹ = 123859427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123859892 and 123859901.

It is not an unprimeable number, because it can be changed into a prime (123859949) 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 in 7 ways as a sum of consecutive naturals, for example, 149539 + ... + 150364.

It is an arithmetic number, because the mean of its divisors is an integer number (17994240).

Almost surely, 2^123859939 is an apocalyptic number.

123859939 is a deficient number, since it is larger than the sum of its proper divisors (20093981).

123859939 is an equidigital number, since it uses as much as digits as its factorization.

123859939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299969.

The product of its digits is 524880, while the sum is 49.

The square root of 123859939 is about 11129.2380242315. The cubic root of 123859939 is about 498.4752738130.

The spelling of 123859939 in words is "one hundred twenty-three million, eight hundred fifty-nine thousand, nine hundred thirty-nine".