123682389 has 4 divisors (see below), whose sum is σ = 164909856. Its totient is φ = 82454924.

The previous prime is 123682373. The next prime is 123682397. The reversal of 123682389 is 983286321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983286321 = 3 ⋅327762107.

It is a cyclic number.

It is not a de Polignac number, because 123682389 - 2⁴ = 123682373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123682389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123682399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20613729 + ... + 20613734.

It is an arithmetic number, because the mean of its divisors is an integer number (41227464).

Almost surely, 2^123682389 is an apocalyptic number.

It is an amenable number.

123682389 is a deficient number, since it is larger than the sum of its proper divisors (41227467).

123682389 is an equidigital number, since it uses as much as digits as its factorization.

123682389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41227466.

The product of its digits is 124416, while the sum is 42.

The square root of 123682389 is about 11121.2584269947. The cubic root of 123682389 is about 498.2369761336.

The spelling of 123682389 in words is "one hundred twenty-three million, six hundred eighty-two thousand, three hundred eighty-nine".