12563389 has 4 divisors (see below), whose sum is σ = 13224640. Its totient is φ = 11902140.

The previous prime is 12563381. The next prime is 12563393. The reversal of 12563389 is 98336521.

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: 98336521 = 1289 ⋅76289.

It is a cyclic number.

It is not a de Polignac number, because 12563389 - 2³ = 12563381 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 (12563381) 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, 330597 + ... + 330634.

It is an arithmetic number, because the mean of its divisors is an integer number (3306160).

Almost surely, 2^12563389 is an apocalyptic number.

12563389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12563389 is a deficient number, since it is larger than the sum of its proper divisors (661251).

12563389 is an equidigital number, since it uses as much as digits as its factorization.

12563389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661250.

The product of its digits is 38880, while the sum is 37.

The square root of 12563389 is about 3544.4871279213. The cubic root of 12563389 is about 232.4710813070.

The spelling of 12563389 in words is "twelve million, five hundred sixty-three thousand, three hundred eighty-nine".