123386789 has 8 divisors (see below), whose sum is σ = 132905472. Its totient is φ = 114214320.

The previous prime is 123386773. The next prime is 123386843. The reversal of 123386789 is 987683321.

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

It is not a de Polignac number, because 123386789 - 2⁴ = 123386773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123386719) 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, 85814 + ... + 87239.

It is an arithmetic number, because the mean of its divisors is an integer number (16613184).

Almost surely, 2^123386789 is an apocalyptic number.

It is an amenable number.

123386789 is a deficient number, since it is larger than the sum of its proper divisors (9518683).

123386789 is a wasteful number, since it uses less digits than its factorization.

123386789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173107.

The product of its digits is 435456, while the sum is 47.

The square root of 123386789 is about 11107.9606139021. The cubic root of 123386789 is about 497.8397319256.

The spelling of 123386789 in words is "one hundred twenty-three million, three hundred eighty-six thousand, seven hundred eighty-nine".