12102389 has 8 divisors (see below), whose sum is σ = 13083672. Its totient is φ = 11128320.

The previous prime is 12102383. The next prime is 12102401. The reversal of 12102389 is 98320121.

It can be written as a sum of positive squares in 4 ways, for example, as 3204100 + 8898289 = 1790^2 + 2983^2 .

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 12102389 - 2⁸ = 12102133 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 (12102383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997 + ... + 5309.

It is an arithmetic number, because the mean of its divisors is an integer number (1635459).

Almost surely, 2^12102389 is an apocalyptic number.

It is an amenable number.

12102389 is a deficient number, since it is larger than the sum of its proper divisors (981283).

12102389 is a wasteful number, since it uses less digits than its factorization.

12102389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12102389 is about 3478.8488038430. The cubic root of 12102389 is about 229.5921505509.

The spelling of 12102389 in words is "twelve million, one hundred two thousand, three hundred eighty-nine".