12745389 has 4 divisors (see below), whose sum is σ = 16993856. Its totient is φ = 8496924.

The previous prime is 12745379. The next prime is 12745399. The reversal of 12745389 is 98354721.

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.

It is an interprime number because it is at equal distance from previous prime (12745379) and next prime (12745399).

It is not a de Polignac number, because 12745389 - 2¹² = 12741293 is a prime.

It is a super-2 number, since 2×12745389² = 324889881522642, 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 (12745379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124229 + ... + 2124234.

It is an arithmetic number, because the mean of its divisors is an integer number (4248464).

Almost surely, 2^12745389 is an apocalyptic number.

It is an amenable number.

12745389 is a deficient number, since it is larger than the sum of its proper divisors (4248467).

12745389 is an equidigital number, since it uses as much as digits as its factorization.

12745389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248466.

The product of its digits is 60480, while the sum is 39.

The square root of 12745389 is about 3570.0684867380. The cubic root of 12745389 is about 233.5882707898.

The spelling of 12745389 in words is "twelve million, seven hundred forty-five thousand, three hundred eighty-nine".