123099389 has 8 divisors (see below), whose sum is σ = 142612800. Its totient is φ = 104067936.

The previous prime is 123099377. The next prime is 123099391. The reversal of 123099389 is 983990321.

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

It is not a de Polignac number, because 123099389 - 2¹² = 123095293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123099359) 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, 119939 + ... + 120960.

It is an arithmetic number, because the mean of its divisors is an integer number (17826600).

Almost surely, 2^123099389 is an apocalyptic number.

It is an amenable number.

123099389 is a deficient number, since it is larger than the sum of its proper divisors (19513411).

123099389 is an equidigital number, since it uses as much as digits as its factorization.

123099389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240979.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 123099389 is about 11095.0164037734. The cubic root of 123099389 is about 497.4528985819.

The spelling of 123099389 in words is "one hundred twenty-three million, ninety-nine thousand, three hundred eighty-nine".