12845389 has 4 divisors (see below), whose sum is σ = 12916540. Its totient is φ = 12774240.

The previous prime is 12845383. The next prime is 12845411. The reversal of 12845389 is 98354821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 476100 + 12369289 = 690^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 12845389 - 2³ = 12845381 is a prime.

It is a super-2 number, since 2×12845389² = 330008037122642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12845381) 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, 35304 + ... + 35665.

It is an arithmetic number, because the mean of its divisors is an integer number (3229135).

Almost surely, 2^12845389 is an apocalyptic number.

It is an amenable number.

12845389 is a deficient number, since it is larger than the sum of its proper divisors (71151).

12845389 is an equidigital number, since it uses as much as digits as its factorization.

12845389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71150.

The product of its digits is 69120, while the sum is 40.

The square root of 12845389 is about 3584.0464561721. The cubic root of 12845389 is about 234.1975892149.

The spelling of 12845389 in words is "twelve million, eight hundred forty-five thousand, three hundred eighty-nine".